diff --git a/build.sh b/build.sh
index 28d4f93357..a263d35b70 100755
--- a/build.sh
+++ b/build.sh
@@ -56,7 +56,7 @@ function get_toolchain()
 
 function get_available_board()
 {
-  MILKV_BOARD_ARRAY=( $(find device -mindepth 1 -maxdepth 1 -type d -print ! -name "." | awk -F/ '{ print $NF }' | sort -t '-' -k2,2) )
+  MILKV_BOARD_ARRAY=( $(find device -mindepth 1 -maxdepth 1 -not -path 'device/common' -type d -print ! -name "." | awk -F/ '{ print $NF }' | sort -t '-' -k2,2) )
   #echo ${MILKV_BOARD_ARRAY[@]}
 
   MILKV_BOARD_ARRAY_LEN=${#MILKV_BOARD_ARRAY[@]}
diff --git a/build/Makefile b/build/Makefile
index 6fe90380f8..9746743d1b 100644
--- a/build/Makefile
+++ b/build/Makefile
@@ -578,8 +578,9 @@ endif
 
 	# copy milkv overlay files
 ifeq ($(MV_VENDOR), milkv)
+	${Q}cp -arf $(TOP_DIR)/device/common/overlay/* $(BR_ROOTFS_DIR)/
 	${Q}cp -arf $(TOP_DIR)/device/$(MV_BOARD)/overlay/* $(BR_ROOTFS_DIR)/
-	${Q}cp -arf $(TOP_DIR)/device/$(MV_BOARD)/br_overlay/* $(BR_ROOTFS_DIR)/
+	${Q}cp -arf $(TOP_DIR)/device/common/br_overlay/* $(BR_ROOTFS_DIR)/
 	${Q}rm -rf $(BR_OVERLAY_DIR)
 endif
 	# strip
diff --git a/device/milkv-duo256m/br_overlay/.gitignore b/device/common/br_overlay/.gitignore
similarity index 100%
rename from device/milkv-duo256m/br_overlay/.gitignore
rename to device/common/br_overlay/.gitignore
diff --git a/device/milkv-duo-spinand/br_overlay/etc/dnsmasq.conf b/device/common/br_overlay/etc/dnsmasq.conf
similarity index 100%
rename from device/milkv-duo-spinand/br_overlay/etc/dnsmasq.conf
rename to device/common/br_overlay/etc/dnsmasq.conf
diff --git a/device/milkv-duo-spinand/br_overlay/etc/init.d/S99user b/device/common/br_overlay/etc/init.d/S99user
similarity index 100%
rename from device/milkv-duo-spinand/br_overlay/etc/init.d/S99user
rename to device/common/br_overlay/etc/init.d/S99user
diff --git a/device/milkv-duo-spinand/br_overlay/etc/inittab b/device/common/br_overlay/etc/inittab
similarity index 100%
rename from device/milkv-duo-spinand/br_overlay/etc/inittab
rename to device/common/br_overlay/etc/inittab
diff --git a/device/milkv-duo-spinand/br_overlay/etc/profile b/device/common/br_overlay/etc/profile
similarity index 100%
rename from device/milkv-duo-spinand/br_overlay/etc/profile
rename to device/common/br_overlay/etc/profile
diff --git a/device/milkv-duo-spinand/br_overlay/etc/run_usb.sh b/device/common/br_overlay/etc/run_usb.sh
similarity index 100%
rename from device/milkv-duo-spinand/br_overlay/etc/run_usb.sh
rename to device/common/br_overlay/etc/run_usb.sh
diff --git a/device/milkv-duo-spinand/br_overlay/etc/uhubon.sh b/device/common/br_overlay/etc/uhubon.sh
similarity index 100%
rename from device/milkv-duo-spinand/br_overlay/etc/uhubon.sh
rename to device/common/br_overlay/etc/uhubon.sh
diff --git a/device/milkv-duo-spinand/br_overlay/lib/ld-musl-riscv64v0p7_xthead.so.1 b/device/common/br_overlay/lib/ld-musl-riscv64v0p7_xthead.so.1
similarity index 100%
rename from device/milkv-duo-spinand/br_overlay/lib/ld-musl-riscv64v0p7_xthead.so.1
rename to device/common/br_overlay/lib/ld-musl-riscv64v0p7_xthead.so.1
diff --git a/device/milkv-duo-spinand/br_overlay/usr/lib64v0p7_xthead/lp64d/libc.so b/device/common/br_overlay/usr/lib64v0p7_xthead/lp64d/libc.so
similarity index 100%
rename from device/milkv-duo-spinand/br_overlay/usr/lib64v0p7_xthead/lp64d/libc.so
rename to device/common/br_overlay/usr/lib64v0p7_xthead/lp64d/libc.so
diff --git a/device/milkv-duo-spinand/br_overlay/usr/local/bin/autologin b/device/common/br_overlay/usr/local/bin/autologin
similarity index 100%
rename from device/milkv-duo-spinand/br_overlay/usr/local/bin/autologin
rename to device/common/br_overlay/usr/local/bin/autologin
diff --git a/device/milkv-duo/overlay/mnt/cfg/param/cvi_sdr_bin b/device/common/overlay/mnt/cfg/param/cvi_sdr_bin
similarity index 100%
rename from device/milkv-duo/overlay/mnt/cfg/param/cvi_sdr_bin
rename to device/common/overlay/mnt/cfg/param/cvi_sdr_bin
diff --git a/device/milkv-duo/overlay/mnt/cfg/param/cvi_sdr_bin_GC2083 b/device/common/overlay/mnt/cfg/param/cvi_sdr_bin_GC2083
similarity index 100%
rename from device/milkv-duo/overlay/mnt/cfg/param/cvi_sdr_bin_GC2083
rename to device/common/overlay/mnt/cfg/param/cvi_sdr_bin_GC2083
diff --git a/device/common/overlay/mnt/cfg/param/cvi_sdr_bin_OV5647.bin b/device/common/overlay/mnt/cfg/param/cvi_sdr_bin_OV5647.bin
new file mode 100644
index 0000000000..2c65bfdd7f
Binary files /dev/null and b/device/common/overlay/mnt/cfg/param/cvi_sdr_bin_OV5647.bin differ
diff --git a/device/milkv-duo/overlay/mnt/cfg/param/cvi_sdr_bin_SC035HGS b/device/common/overlay/mnt/cfg/param/cvi_sdr_bin_SC035HGS
similarity index 100%
rename from device/milkv-duo/overlay/mnt/cfg/param/cvi_sdr_bin_SC035HGS
rename to device/common/overlay/mnt/cfg/param/cvi_sdr_bin_SC035HGS
diff --git a/device/milkv-duo/overlay/mnt/data/install/lib/ai/libcnpy.so b/device/common/overlay/mnt/system/lib/libcnpy.so
old mode 100755
new mode 100644
similarity index 60%
rename from device/milkv-duo/overlay/mnt/data/install/lib/ai/libcnpy.so
rename to device/common/overlay/mnt/system/lib/libcnpy.so
index 20cf0304ee..ce4d4aa177
Binary files a/device/milkv-duo/overlay/mnt/data/install/lib/ai/libcnpy.so and b/device/common/overlay/mnt/system/lib/libcnpy.so differ
diff --git a/device/common/overlay/mnt/system/lib/libcvi_ive_tpu.so b/device/common/overlay/mnt/system/lib/libcvi_ive_tpu.so
new file mode 100644
index 0000000000..6b9b057797
Binary files /dev/null and b/device/common/overlay/mnt/system/lib/libcvi_ive_tpu.so differ
diff --git a/device/milkv-duo/overlay/mnt/data/install/lib/libcvi_rtsp.so b/device/common/overlay/mnt/system/lib/libcvi_rtsp.so
old mode 100755
new mode 100644
similarity index 100%
rename from device/milkv-duo/overlay/mnt/data/install/lib/libcvi_rtsp.so
rename to device/common/overlay/mnt/system/lib/libcvi_rtsp.so
diff --git a/device/common/overlay/mnt/system/lib/libcvi_tdl.so b/device/common/overlay/mnt/system/lib/libcvi_tdl.so
new file mode 100644
index 0000000000..26154274ed
Binary files /dev/null and b/device/common/overlay/mnt/system/lib/libcvi_tdl.so differ
diff --git a/device/common/overlay/mnt/system/lib/libcvikernel.so b/device/common/overlay/mnt/system/lib/libcvikernel.so
new file mode 100644
index 0000000000..6f89613710
Binary files /dev/null and b/device/common/overlay/mnt/system/lib/libcvikernel.so differ
diff --git a/device/milkv-duo/overlay/mnt/data/install/lib/ai/libcvimath.so b/device/common/overlay/mnt/system/lib/libcvimath.so
similarity index 100%
rename from device/milkv-duo/overlay/mnt/data/install/lib/ai/libcvimath.so
rename to device/common/overlay/mnt/system/lib/libcvimath.so
diff --git a/device/common/overlay/mnt/system/lib/libcviruntime.so b/device/common/overlay/mnt/system/lib/libcviruntime.so
new file mode 100644
index 0000000000..22476c1708
Binary files /dev/null and b/device/common/overlay/mnt/system/lib/libcviruntime.so differ
diff --git a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libopencv_core.so.3.2.0 b/device/common/overlay/mnt/system/lib/libopencv_core.so.3.2
similarity index 99%
rename from device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libopencv_core.so.3.2.0
rename to device/common/overlay/mnt/system/lib/libopencv_core.so.3.2
index 60d5743409..10906a2265 100644
Binary files a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libopencv_core.so.3.2.0 and b/device/common/overlay/mnt/system/lib/libopencv_core.so.3.2 differ
diff --git a/device/milkv-duo/overlay/mnt/data/install/lib/ai/libopencv_imgcodecs.so.3.2.0 b/device/common/overlay/mnt/system/lib/libopencv_imgcodecs.so.3.2
similarity index 100%
rename from device/milkv-duo/overlay/mnt/data/install/lib/ai/libopencv_imgcodecs.so.3.2.0
rename to device/common/overlay/mnt/system/lib/libopencv_imgcodecs.so.3.2
diff --git a/device/milkv-duo/overlay/mnt/data/install/lib/ai/libopencv_imgproc.so.3.2.0 b/device/common/overlay/mnt/system/lib/libopencv_imgproc.so.3.2
similarity index 100%
rename from device/milkv-duo/overlay/mnt/data/install/lib/ai/libopencv_imgproc.so.3.2.0
rename to device/common/overlay/mnt/system/lib/libopencv_imgproc.so.3.2
diff --git a/device/common/overlay/mnt/system/usr/bin/camera-test.sh b/device/common/overlay/mnt/system/usr/bin/camera-test.sh
new file mode 100755
index 0000000000..61d5374da0
--- /dev/null
+++ b/device/common/overlay/mnt/system/usr/bin/camera-test.sh
@@ -0,0 +1,6 @@
+#!/bin/sh
+
+export LD_LIBRARY_PATH=/mnt/system/lib
+
+sample_vi_fd /mnt/cvimodel/scrfd_768_432_int8_1x.cvimodel
+
diff --git a/device/common/overlay/mnt/system/usr/bin/sample_vi_fd b/device/common/overlay/mnt/system/usr/bin/sample_vi_fd
new file mode 100755
index 0000000000..33e7a04c3e
Binary files /dev/null and b/device/common/overlay/mnt/system/usr/bin/sample_vi_fd differ
diff --git a/device/milkv-duo/overlay/usr/share/fw_vcodec/coda980.bin b/device/common/overlay/usr/share/fw_vcodec/coda980.bin
similarity index 100%
rename from device/milkv-duo/overlay/usr/share/fw_vcodec/coda980.bin
rename to device/common/overlay/usr/share/fw_vcodec/coda980.bin
diff --git a/device/milkv-duo/overlay/usr/share/fw_vcodec/monet.bin b/device/common/overlay/usr/share/fw_vcodec/monet.bin
similarity index 100%
rename from device/milkv-duo/overlay/usr/share/fw_vcodec/monet.bin
rename to device/common/overlay/usr/share/fw_vcodec/monet.bin
diff --git a/device/milkv-duo-lite/br_overlay b/device/milkv-duo-lite/br_overlay
deleted file mode 120000
index b8ad52094b..0000000000
--- a/device/milkv-duo-lite/br_overlay
+++ /dev/null
@@ -1 +0,0 @@
-../milkv-duo/br_overlay
\ No newline at end of file
diff --git a/device/milkv-duo-spinand/br_overlay/.gitignore b/device/milkv-duo-spinand/br_overlay/.gitignore
deleted file mode 100644
index f89c6b2d50..0000000000
--- a/device/milkv-duo-spinand/br_overlay/.gitignore
+++ /dev/null
@@ -1,6 +0,0 @@
-mnt/system/
-mnt/cfg/
-mnt/data/
-usr/bin
-usr/share
-usr/lib
diff --git a/device/milkv-duo-spinand/genimage.cfg b/device/milkv-duo-spinand/genimage.cfg
index 5c64943057..bd4cbe61b3 100644
--- a/device/milkv-duo-spinand/genimage.cfg
+++ b/device/milkv-duo-spinand/genimage.cfg
@@ -34,6 +34,10 @@ image milkv-duospinand.img {
 
 	partition system {
 		image = "rawimages/system.spinand"
-		size = 81152k
+		size = 71680k
 
+	partition cfg {
+		image = "rawimages/cfg.spinand"
+		size = 4096k
+	}
 }
diff --git a/device/milkv-duo-spinor/br_overlay/.gitignore b/device/milkv-duo-spinor/br_overlay/.gitignore
deleted file mode 100644
index f89c6b2d50..0000000000
--- a/device/milkv-duo-spinor/br_overlay/.gitignore
+++ /dev/null
@@ -1,6 +0,0 @@
-mnt/system/
-mnt/cfg/
-mnt/data/
-usr/bin
-usr/share
-usr/lib
diff --git a/device/milkv-duo-spinor/br_overlay/etc/dnsmasq.conf b/device/milkv-duo-spinor/br_overlay/etc/dnsmasq.conf
deleted file mode 100644
index fcdb620ffa..0000000000
--- a/device/milkv-duo-spinor/br_overlay/etc/dnsmasq.conf
+++ /dev/null
@@ -1,4 +0,0 @@
-interface=usb0
-dhcp-range=192.168.42.2,192.168.42.242,1h
-dhcp-option=3
-dhcp-option=6
diff --git a/device/milkv-duo-spinor/br_overlay/etc/init.d/S99user b/device/milkv-duo-spinor/br_overlay/etc/init.d/S99user
deleted file mode 100755
index 32b5248454..0000000000
--- a/device/milkv-duo-spinor/br_overlay/etc/init.d/S99user
+++ /dev/null
@@ -1,50 +0,0 @@
-#!/bin/sh
-${CVI_SHOPTS}
-#
-# Start firmware
-#
-export USERDATAPATH=/mnt/data/
-export SYSTEMPATH=/mnt/system/
-
-case "$1" in
-  start)
-        echo "init mpp system..."
-        if [ -d $SYSTEMPATH/ko ]; then
-                sh $SYSTEMPATH/ko/loadsystemko.sh
-        fi
-
-        echo "Starting app..."
-
-        if [ -f $SYSTEMPATH/duo-init.sh ]; then
-                . $SYSTEMPATH/duo-init.sh &
-        fi
-
-        if [ -f $SYSTEMPATH/blink.sh ]; then
-                . $SYSTEMPATH/blink.sh &
-        fi
-
-	if [ -f $SYSTEMPATH/usb.sh ]; then
-                . $SYSTEMPATH/usb.sh &
-        fi
-
-        if [ -f $USERDATAPATH/auto.sh ]; then
-                usleep 30000
-                . $USERDATAPATH/auto.sh &
-		exit 1
-        fi
-	if [ -f $SYSTEMPATH/auto.sh ]; then
-                usleep 30000
-                . $SYSTEMPATH/auto.sh &
-        fi
-        ;;
-  stop)
-        ;;
-  restart|reload)
-        ;;
-  *)
-        echo "Usage: $0 {start|stop|restart}"
-        exit 1
-esac
-
-exit $?
-
diff --git a/device/milkv-duo-spinor/br_overlay/etc/inittab b/device/milkv-duo-spinor/br_overlay/etc/inittab
deleted file mode 100644
index 2c9793ce9a..0000000000
--- a/device/milkv-duo-spinor/br_overlay/etc/inittab
+++ /dev/null
@@ -1,40 +0,0 @@
-# /etc/inittab
-#
-# Copyright (C) 2001 Erik Andersen <andersen@codepoet.org>
-#
-# Note: BusyBox init doesn't support runlevels.  The runlevels field is
-# completely ignored by BusyBox init. If you want runlevels, use
-# sysvinit.
-#
-# Format for each entry: <id>:<runlevels>:<action>:<process>
-#
-# id        == tty to run on, or empty for /dev/console
-# runlevels == ignored
-# action    == one of sysinit, respawn, askfirst, wait, and once
-# process   == program to run
-
-# Startup the system
-::sysinit:/bin/mount -t proc proc /proc
-::sysinit:/bin/mount -o remount,rw /
-::sysinit:/bin/mkdir -p /dev/pts /dev/shm
-::sysinit:/bin/mount -a
-::sysinit:/sbin/swapon -a
-null::sysinit:/bin/ln -sf /proc/self/fd /dev/fd
-null::sysinit:/bin/ln -sf /proc/self/fd/0 /dev/stdin
-null::sysinit:/bin/ln -sf /proc/self/fd/1 /dev/stdout
-null::sysinit:/bin/ln -sf /proc/self/fd/2 /dev/stderr
-::sysinit:/bin/hostname -F /etc/hostname
-# now run any rc scripts
-::sysinit:/etc/init.d/rcS
-
-# Put a getty on the serial port
-# console::respawn:/sbin/getty -L  console 0 vt100 # GENERIC_SERIAL
-console::respawn:/sbin/getty -L  console 115200 vt100 -n -l /usr/local/bin/autologin
-
-# Stuff to do for the 3-finger salute
-#::ctrlaltdel:/sbin/reboot
-
-# Stuff to do before rebooting
-::shutdown:/etc/init.d/rcK
-::shutdown:/sbin/swapoff -a
-::shutdown:/bin/umount -a -r
diff --git a/device/milkv-duo-spinor/br_overlay/etc/profile b/device/milkv-duo-spinor/br_overlay/etc/profile
deleted file mode 100644
index d99b378634..0000000000
--- a/device/milkv-duo-spinor/br_overlay/etc/profile
+++ /dev/null
@@ -1,37 +0,0 @@
-export PATH="/bin:/sbin:/usr/bin:/usr/sbin"
-export PATH="/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin:/mnt/system/usr/bin:/mnt/system/usr/sbin:/mnt/data/bin:/mnt/data/sbin"
-
-if [ "$PS1" ]; then
-	if [ "`id -u`" -eq 0 ]; then
-		export PS1='# '
-	else
-		export PS1='$ '
-	fi
-fi
-
-export PAGER='/bin/more '
-export EDITOR='/bin/vi'
-
-# Source configuration files from /etc/profile.d
-for i in /etc/profile.d/*.sh ; do
-	if [ -r "$i" ]; then
-		. $i
-	fi
-	unset i
-done
-
-export HOSTNAME="$(hostname)"
-export OLDPWD=/root
-
-if [ '$USER' == 'root' ]; then
-    export PS1='[\u@\h]\w\# '
-else
-    export PS1='[\u@\h]\w\$ '
-fi
-
-alias ll='ls -alF'
-alias la='ls -A'
-alias l='ls -CF'
-
-export TERM=vt100
-export TERMINFO=/usr/share/terminfo
diff --git a/device/milkv-duo-spinor/br_overlay/etc/run_usb.sh b/device/milkv-duo-spinor/br_overlay/etc/run_usb.sh
deleted file mode 100755
index 760c702845..0000000000
--- a/device/milkv-duo-spinor/br_overlay/etc/run_usb.sh
+++ /dev/null
@@ -1,292 +0,0 @@
-CLASS=acm
-VID=0x3346
-PID=0x1003
-MSC_PID=0x1008
-RNDIS_PID=0x1009
-UVC_PID=0x100A
-UAC_PID=0x100B
-ADB_VID=0x18D1
-ADB_PID=0x4EE0
-ADB_PID_M1=0x4EE2
-ADB_PID_M2=0x4EE4
-MANUFACTURER="Cvitek"
-PRODUCT="USB Com Port"
-PRODUCT_RNDIS="RNDIS"
-PRODUCT_UVC="UVC"
-PRODUCT_UAC="UAC"
-PRODUCT_ADB="ADB"
-ADBD_PATH=/usr/bin/
-SERIAL="0123456789"
-MSC_FILE=$3
-CVI_DIR=/tmp/usb
-CVI_GADGET=$CVI_DIR/usb_gadget/cvitek
-CVI_FUNC=$CVI_GADGET/functions
-FUNC_NUM=0
-MAX_EP_NUM=4
-TMP_NUM=0
-INTF_NUM=0
-EP_IN=0
-EP_OUT=0
-
-case "$2" in
-  acm)
-	CLASS=acm
-	;;
-  msc)
-	CLASS=mass_storage
-	PID=$MSC_PID
-	;;
-  cvg)
-	CLASS=cvg
-	;;
-  rndis)
-	CLASS=rndis
-	PID=$RNDIS_PID
-	PRODUCT=$PRODUCT_RNDIS
-	;;
-  uvc)
-	CLASS=uvc
-	PID=$UVC_PID
-	PRODUCT=$PRODUCT_UVC
-	;;
-  uac1)
-	CLASS=uac1
-	PID=$UAC_PID
-	PRODUCT=$PRODUCT_UAC
-	;;
-  adb)
-	CLASS=ffs.adb
-	VID=$ADB_VID
-	PID=$ADB_PID
-	PRODUCT=$PRODUCT_ADB
-	;;
-  *)
-	if [ "$1" = "probe" ] ; then
-	  echo "Usage: $0 probe {acm|msc|cvg|rndis|uvc|uac1|adb}"
-	  exit 1
-	fi
-esac
-
-calc_func() {
-  FUNC_NUM=$(ls $CVI_GADGET/functions -l | grep ^d | wc -l)
-  echo "$FUNC_NUM file(s)"
-}
-
-res_check() {
-  TMP_NUM=$(find $CVI_GADGET/functions/ -name "acm*" | wc -l)
-  EP_OUT=$(($EP_OUT+$TMP_NUM))
-  TMP_NUM=$(($TMP_NUM * 2))
-  EP_IN=$(($EP_IN+$TMP_NUM))
-  INTF_NUM=$(($INTF_NUM+$TMP_NUM))
-  TMP_NUM=$(find $CVI_GADGET/functions/ -name "mass_storage*" | wc -l)
-  EP_IN=$(($EP_IN+$TMP_NUM))
-  EP_OUT=$(($EP_OUT+$TMP_NUM))
-  INTF_NUM=$(($INTF_NUM+$TMP_NUM))
-  TMP_NUM=$(find $CVI_GADGET/functions/ -name "cvg*" | wc -l)
-  EP_IN=$(($EP_IN+$TMP_NUM))
-  EP_OUT=$(($EP_OUT+$TMP_NUM))
-  INTF_NUM=$(($INTF_NUM+$TMP_NUM))
-  TMP_NUM=$(find $CVI_GADGET/functions/ -name "rndis*" | wc -l)
-  EP_OUT=$(($EP_OUT+$TMP_NUM))
-  TMP_NUM=$(($TMP_NUM * 2))
-  EP_IN=$(($EP_IN+$TMP_NUM))
-  INTF_NUM=$(($INTF_NUM+$TMP_NUM))
-  TMP_NUM=$(find $CVI_GADGET/functions/ -name "uvc*" | wc -l)
-  TMP_NUM=$(($TMP_NUM * 2))
-  EP_IN=$(($EP_IN+$TMP_NUM))
-  INTF_NUM=$(($INTF_NUM+$TMP_NUM))
-  TMP_NUM=$(find $CVI_GADGET/functions/ -name "uac1*" | wc -l)
-  TMP_NUM=$(($TMP_NUM * 2))
-  EP_IN=$(($EP_IN+$TMP_NUM))
-  EP_OUT=$(($EP_OUT+$TMP_NUM))
-  INTF_NUM=$(($INTF_NUM+$TMP_NUM))
-  TMP_NUM=$(find $CVI_GADGET/functions/ -name ffs.adb | wc -l)
-  EP_IN=$(($EP_IN+$TMP_NUM))
-  EP_OUT=$(($EP_OUT+$TMP_NUM))
-  INTF_NUM=$(($INTF_NUM+$TMP_NUM))
-
-  if [ "$CLASS" = "acm" ] ; then
-    EP_IN=$(($EP_IN+2))
-    EP_OUT=$(($EP_OUT+1))
-  fi
-  if [ "$CLASS" = "mass_storage" ] ; then
-    EP_IN=$(($EP_IN+1))
-    EP_OUT=$(($EP_OUT+1))
-  fi
-  if [ "$CLASS" = "cvg" ] ; then
-    EP_IN=$(($EP_IN+1))
-    EP_OUT=$(($EP_OUT+1))
-  fi
-  if [ "$CLASS" = "rndis" ] ; then
-    EP_IN=$(($EP_IN+2))
-    EP_OUT=$(($EP_OUT+1))
-  fi
-  if [ "$CLASS" = "uvc" ] ; then
-    EP_IN=$(($EP_IN+2))
-  fi
-  if [ "$CLASS" = "uac1" ] ; then
-    EP_IN=$(($EP_IN+1))
-    EP_OUT=$(($EP_OUT+1))
-  fi
-  if [ "$CLASS" = "ffs.adb" ] ; then
-    EP_IN=$(($EP_IN+1))
-    EP_OUT=$(($EP_OUT+1))
-  fi
-  echo "$EP_IN in ep"
-  echo "$EP_OUT out ep"
-  if [ $EP_IN -gt $MAX_EP_NUM ]; then
-    echo "reach maximum resource"
-    exit 1
-  fi
-  if [ $EP_OUT -gt $MAX_EP_NUM ]; then
-    echo "reach maximum resource"
-    exit 1
-  fi
-}
-
-probe() {
-  if [ ! -d $CVI_DIR ]; then
-    mkdir $CVI_DIR
-  fi
-  if [ ! -d $CVI_DIR/usb_gadget ]; then
-    # Enale USB ConfigFS
-    mount none $CVI_DIR -t configfs
-    # Create gadget dev
-    mkdir $CVI_GADGET
-    # Set the VID and PID
-    echo $VID >$CVI_GADGET/idVendor
-    echo $PID >$CVI_GADGET/idProduct
-    # Set the product information string
-    mkdir $CVI_GADGET/strings/0x409
-    echo $MANUFACTURER>$CVI_GADGET/strings/0x409/manufacturer
-    echo $PRODUCT>$CVI_GADGET/strings/0x409/product
-    echo $SERIAL>$CVI_GADGET/strings/0x409/serialnumber
-    # Set the USB configuration
-    mkdir $CVI_GADGET/configs/c.1
-    mkdir $CVI_GADGET/configs/c.1/strings/0x409
-    echo "config1">$CVI_GADGET/configs/c.1/strings/0x409/configuration
-    # Set the MaxPower of USB descriptor
-    echo 120 >$CVI_GADGET/configs/c.1/MaxPower
-  fi
-  # get current functions number
-  calc_func
-  # assign the class code for composite device
-  if [ ! $FUNC_NUM -eq 0 ]; then
-    echo 0xEF >$CVI_GADGET/bDeviceClass
-    echo 0x02 >$CVI_GADGET/bDeviceSubClass
-    echo 0x01 >$CVI_GADGET/bDeviceProtocol
-  fi
-  # resource check
-  res_check
-  # create the desired function
-  if [ "$CLASS" = "ffs.adb" ] ; then
-    # adb shall be the last function to probe. Override the pid/vid
-    echo $VID >$CVI_GADGET/idVendor
-    echo $PID >$CVI_GADGET/idProduct
-    # choose pid for different function number
-    if [ $INTF_NUM -eq 1 ]; then
-      echo $ADB_PID_M1 >$CVI_GADGET/idProduct
-    fi
-    if [ $INTF_NUM -eq 2 ]; then
-      echo $ADB_PID_M2 >$CVI_GADGET/idProduct
-    fi
-    mkdir $CVI_GADGET/functions/$CLASS
-  else
-    mkdir $CVI_GADGET/functions/$CLASS.usb$FUNC_NUM
-  fi
-  if [ "$CLASS" = "mass_storage" ] ; then
-    echo $MSC_FILE >$CVI_GADGET/functions/$CLASS.usb$FUNC_NUM/lun.0/file
-  fi
-  if [ "$CLASS" = "rndis" ] ; then
-    #OS STRING
-    echo 1 >$CVI_GADGET/os_desc/use
-    echo 0xcd >$CVI_GADGET/os_desc/b_vendor_code
-    echo MSFT100 >$CVI_GADGET/os_desc/qw_sign
-    #COMPATIBLE ID
-    echo RNDIS >$CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/compatible_id
-    #MAKE c.1 THE ONE ASSOCIATED WITH OS DESCRIPTORS
-    ln -s $CVI_GADGET/configs/c.1 $CVI_GADGET/os_desc
-    #MAKE "Icons" EXTENDED PROPERTY
-    mkdir $CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/Icons
-    echo 2 >$CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/Icons/type
-    echo "%SystemRoot%\\system32\\shell32.dll,-233" >$CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/Icons/data
-    #MAKE "Label" EXTENDED PROPERTY
-    mkdir $CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/Label
-    echo 1 >$CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/Label/type
-    echo "XYZ Device" >$CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/Label/data
-  fi
-
-}
-
-start() {
-  # link this function to the configuration
-  calc_func
-  if [ $FUNC_NUM -eq 0 ]; then
-    echo "Functions Empty!"
-    exit 1
-  fi
-  if [ -d $CVI_GADGET/functions/ffs.adb ]; then
-    FUNC_NUM=$(($FUNC_NUM-1))
-  fi
-  for i in `seq 0 $(($FUNC_NUM-1))`;
-  do
-    find $CVI_GADGET/functions/ -name "*.usb$i" | xargs -I % ln -s % $CVI_GADGET/configs/c.1
-  done
-  if [ -d $CVI_GADGET/functions/ffs.adb ]; then
-    ln -s $CVI_GADGET/functions/ffs.adb $CVI_GADGET/configs/c.1
-    mkdir /dev/usb-ffs/adb -p
-    mount -t functionfs adb /dev/usb-ffs/adb
-    if [ -f $ADBD_PATH/adbd ]; then
-	$ADBD_PATH/adbd &
-    fi
-  else
-    # Start the gadget driver
-    UDC=`ls /sys/class/udc/ | awk '{print $1}'`
-    echo ${UDC} >$CVI_GADGET/UDC
-  fi
-}
-
-stop() {
-  if [ -d $CVI_GADGET/configs/c.1/ffs.adb ]; then
-    pkill adbd
-    rm $CVI_GADGET/configs/c.1/ffs.adb
-  else
-    echo "" >$CVI_GADGET/UDC
-  fi
-  find $CVI_GADGET/configs/ -name "*.usb*" | xargs rm -f
-  rmdir $CVI_GADGET/configs/c.*/strings/0x409/
-  tmp_dirs=$(find $CVI_GADGET/os_desc/c.* -type d)
-  if [ -n tmp_dirs ]; then
-    echo "remove os_desc!"
-    rm -rf $CVI_GADGET/os_desc/c.*/
-    find $CVI_GADGET/functions/ -name Icons | xargs rmdir
-    find $CVI_GADGET/functions/ -name Label | xargs rmdir
-  fi
-  rmdir $CVI_GADGET/configs/c.*/
-  rmdir $CVI_GADGET/functions/*
-  rmdir $CVI_GADGET/strings/0x409/
-  rmdir $CVI_GADGET
-  umount $CVI_DIR
-  rmdir $CVI_DIR
-}
-
-case "$1" in
-  start)
-	start
-	;;
-  stop)
-	stop
-	;;
-  probe)
-	probe
-	;;
-  UDC)
-	ls /sys/class/udc/ >$CVI_GADGET/UDC
-	;;
-  *)
-	echo "Usage: $0 probe {acm|msc|cvg|uvc|uac1} {file (msc)}"
-	echo "Usage: $0 start"
-	echo "Usage: $0 stop"
-	exit 1
-esac
-exit $?
diff --git a/device/milkv-duo-spinor/br_overlay/etc/uhubon.sh b/device/milkv-duo-spinor/br_overlay/etc/uhubon.sh
deleted file mode 100755
index a8256765db..0000000000
--- a/device/milkv-duo-spinor/br_overlay/etc/uhubon.sh
+++ /dev/null
@@ -1,83 +0,0 @@
-GPIO_HUBPORT_EN=449
-GPIO_ROLESEL=450
-GPIO_HUBRST=451
-SYS_GPIO=/sys/class/gpio
-
-hub_on() {
-  echo "turn on usb hub"
-  if [ ! -d $SYS_GPIO/gpio$GPIO_HUBPORT_EN ]; then
-      echo $GPIO_HUBPORT_EN >/sys/class/gpio/export
-  fi
-
-  if [ ! -d $SYS_GPIO/gpio$GPIO_ROLESEL ]; then
-      echo $GPIO_ROLESEL >/sys/class/gpio/export
-  fi
-
-  if [ ! -d $SYS_GPIO/gpio$GPIO_HUBRST ]; then
-      echo $GPIO_HUBRST >/sys/class/gpio/export
-  fi
-
-  echo "out" >/sys/class/gpio/gpio$GPIO_HUBPORT_EN/direction
-  echo "out" >/sys/class/gpio/gpio$GPIO_ROLESEL/direction
-  echo "out" >/sys/class/gpio/gpio$GPIO_HUBRST/direction
-
-  echo 1 >/sys/class/gpio/gpio$GPIO_HUBPORT_EN/value
-  echo 0 >/sys/class/gpio/gpio$GPIO_ROLESEL/value
-  echo 0 >/sys/class/gpio/gpio$GPIO_HUBRST/value
-}
-
-hub_off() {
-  echo "turn off usb hub"
-  if [ ! -d $SYS_GPIO/gpio$GPIO_HUBPORT_EN ]; then
-      echo $GPIO_HUBPORT_EN >/sys/class/gpio/export
-  fi
-
-  if [ ! -d $SYS_GPIO/gpio$GPIO_ROLESEL ]; then
-      echo $GPIO_ROLESEL >/sys/class/gpio/export
-  fi
-
-  if [ ! -d $SYS_GPIO/gpio$GPIO_HUBRST ]; then
-      echo $GPIO_HUBRST >/sys/class/gpio/export
-  fi
-
-  echo "out" >/sys/class/gpio/gpio$GPIO_HUBPORT_EN/direction
-  echo "out" >/sys/class/gpio/gpio$GPIO_ROLESEL/direction
-  echo "out" >/sys/class/gpio/gpio$GPIO_HUBRST/direction
-
-  echo 0 >/sys/class/gpio/gpio$GPIO_HUBPORT_EN/value
-  echo 1 >/sys/class/gpio/gpio$GPIO_ROLESEL/value
-  echo 1 >/sys/class/gpio/gpio$GPIO_HUBRST/value
-}
-
-inst_mod() {
-  insmod /mnt/system/ko/configfs.ko
-  insmod /mnt/system/ko/libcomposite.ko
-  insmod /mnt/system/ko/u_serial.ko
-  insmod /mnt/system/ko/usb_f_acm.ko
-  insmod /mnt/system/ko/cvi_usb_f_cvg.ko
-  insmod /mnt/system/ko/usb_f_uvc.ko
-  insmod /mnt/system/ko/usb_f_fs.ko
-  insmod /mnt/system/ko/u_audio.ko
-  insmod /mnt/system/ko/usb_f_uac1.ko
-  insmod /mnt/system/ko/usb_f_serial.ko
-  insmod /mnt/system/ko/usb_f_mass_storage.ko
-  insmod /mnt/system/ko/u_ether.ko
-  insmod /mnt/system/ko/usb_f_ecm.ko
-  insmod /mnt/system/ko/usb_f_eem.ko
-  insmod /mnt/system/ko/usb_f_rndis.ko
-}
-
-case "$1" in
-  host)
-	insmod /mnt/system/ko/dwc2.ko
-  echo host > /proc/cviusb/otg_role
-	;;
-  device)
-	echo device > /proc/cviusb/otg_role
-	;;
-  *)
-	echo "Usage: $0 host"
-	echo "Usage: $0 device"
-	exit 1
-esac
-exit $?
diff --git a/device/milkv-duo-spinor/br_overlay/lib/ld-musl-riscv64v0p7_xthead.so.1 b/device/milkv-duo-spinor/br_overlay/lib/ld-musl-riscv64v0p7_xthead.so.1
deleted file mode 120000
index 4665bcf84d..0000000000
--- a/device/milkv-duo-spinor/br_overlay/lib/ld-musl-riscv64v0p7_xthead.so.1
+++ /dev/null
@@ -1 +0,0 @@
-../usr/lib64v0p7_xthead/lp64d/libc.so
\ No newline at end of file
diff --git a/device/milkv-duo-spinor/br_overlay/usr/lib64v0p7_xthead/lp64d/libc.so b/device/milkv-duo-spinor/br_overlay/usr/lib64v0p7_xthead/lp64d/libc.so
deleted file mode 100755
index 8a2b8ff7d2..0000000000
Binary files a/device/milkv-duo-spinor/br_overlay/usr/lib64v0p7_xthead/lp64d/libc.so and /dev/null differ
diff --git a/device/milkv-duo-spinor/br_overlay/usr/local/bin/autologin b/device/milkv-duo-spinor/br_overlay/usr/local/bin/autologin
deleted file mode 100755
index 6f12842ec1..0000000000
--- a/device/milkv-duo-spinor/br_overlay/usr/local/bin/autologin
+++ /dev/null
@@ -1,2 +0,0 @@
-#! /bin/sh
-exec /bin/login -f root
diff --git a/device/milkv-duo/br_overlay/.gitignore b/device/milkv-duo/br_overlay/.gitignore
deleted file mode 100644
index f89c6b2d50..0000000000
--- a/device/milkv-duo/br_overlay/.gitignore
+++ /dev/null
@@ -1,6 +0,0 @@
-mnt/system/
-mnt/cfg/
-mnt/data/
-usr/bin
-usr/share
-usr/lib
diff --git a/device/milkv-duo/br_overlay/etc/dnsmasq.conf b/device/milkv-duo/br_overlay/etc/dnsmasq.conf
deleted file mode 100644
index fcdb620ffa..0000000000
--- a/device/milkv-duo/br_overlay/etc/dnsmasq.conf
+++ /dev/null
@@ -1,4 +0,0 @@
-interface=usb0
-dhcp-range=192.168.42.2,192.168.42.242,1h
-dhcp-option=3
-dhcp-option=6
diff --git a/device/milkv-duo/br_overlay/etc/init.d/S99user b/device/milkv-duo/br_overlay/etc/init.d/S99user
deleted file mode 100755
index 32b5248454..0000000000
--- a/device/milkv-duo/br_overlay/etc/init.d/S99user
+++ /dev/null
@@ -1,50 +0,0 @@
-#!/bin/sh
-${CVI_SHOPTS}
-#
-# Start firmware
-#
-export USERDATAPATH=/mnt/data/
-export SYSTEMPATH=/mnt/system/
-
-case "$1" in
-  start)
-        echo "init mpp system..."
-        if [ -d $SYSTEMPATH/ko ]; then
-                sh $SYSTEMPATH/ko/loadsystemko.sh
-        fi
-
-        echo "Starting app..."
-
-        if [ -f $SYSTEMPATH/duo-init.sh ]; then
-                . $SYSTEMPATH/duo-init.sh &
-        fi
-
-        if [ -f $SYSTEMPATH/blink.sh ]; then
-                . $SYSTEMPATH/blink.sh &
-        fi
-
-	if [ -f $SYSTEMPATH/usb.sh ]; then
-                . $SYSTEMPATH/usb.sh &
-        fi
-
-        if [ -f $USERDATAPATH/auto.sh ]; then
-                usleep 30000
-                . $USERDATAPATH/auto.sh &
-		exit 1
-        fi
-	if [ -f $SYSTEMPATH/auto.sh ]; then
-                usleep 30000
-                . $SYSTEMPATH/auto.sh &
-        fi
-        ;;
-  stop)
-        ;;
-  restart|reload)
-        ;;
-  *)
-        echo "Usage: $0 {start|stop|restart}"
-        exit 1
-esac
-
-exit $?
-
diff --git a/device/milkv-duo/br_overlay/etc/inittab b/device/milkv-duo/br_overlay/etc/inittab
deleted file mode 100644
index 2c9793ce9a..0000000000
--- a/device/milkv-duo/br_overlay/etc/inittab
+++ /dev/null
@@ -1,40 +0,0 @@
-# /etc/inittab
-#
-# Copyright (C) 2001 Erik Andersen <andersen@codepoet.org>
-#
-# Note: BusyBox init doesn't support runlevels.  The runlevels field is
-# completely ignored by BusyBox init. If you want runlevels, use
-# sysvinit.
-#
-# Format for each entry: <id>:<runlevels>:<action>:<process>
-#
-# id        == tty to run on, or empty for /dev/console
-# runlevels == ignored
-# action    == one of sysinit, respawn, askfirst, wait, and once
-# process   == program to run
-
-# Startup the system
-::sysinit:/bin/mount -t proc proc /proc
-::sysinit:/bin/mount -o remount,rw /
-::sysinit:/bin/mkdir -p /dev/pts /dev/shm
-::sysinit:/bin/mount -a
-::sysinit:/sbin/swapon -a
-null::sysinit:/bin/ln -sf /proc/self/fd /dev/fd
-null::sysinit:/bin/ln -sf /proc/self/fd/0 /dev/stdin
-null::sysinit:/bin/ln -sf /proc/self/fd/1 /dev/stdout
-null::sysinit:/bin/ln -sf /proc/self/fd/2 /dev/stderr
-::sysinit:/bin/hostname -F /etc/hostname
-# now run any rc scripts
-::sysinit:/etc/init.d/rcS
-
-# Put a getty on the serial port
-# console::respawn:/sbin/getty -L  console 0 vt100 # GENERIC_SERIAL
-console::respawn:/sbin/getty -L  console 115200 vt100 -n -l /usr/local/bin/autologin
-
-# Stuff to do for the 3-finger salute
-#::ctrlaltdel:/sbin/reboot
-
-# Stuff to do before rebooting
-::shutdown:/etc/init.d/rcK
-::shutdown:/sbin/swapoff -a
-::shutdown:/bin/umount -a -r
diff --git a/device/milkv-duo/br_overlay/etc/profile b/device/milkv-duo/br_overlay/etc/profile
deleted file mode 100644
index d99b378634..0000000000
--- a/device/milkv-duo/br_overlay/etc/profile
+++ /dev/null
@@ -1,37 +0,0 @@
-export PATH="/bin:/sbin:/usr/bin:/usr/sbin"
-export PATH="/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin:/mnt/system/usr/bin:/mnt/system/usr/sbin:/mnt/data/bin:/mnt/data/sbin"
-
-if [ "$PS1" ]; then
-	if [ "`id -u`" -eq 0 ]; then
-		export PS1='# '
-	else
-		export PS1='$ '
-	fi
-fi
-
-export PAGER='/bin/more '
-export EDITOR='/bin/vi'
-
-# Source configuration files from /etc/profile.d
-for i in /etc/profile.d/*.sh ; do
-	if [ -r "$i" ]; then
-		. $i
-	fi
-	unset i
-done
-
-export HOSTNAME="$(hostname)"
-export OLDPWD=/root
-
-if [ '$USER' == 'root' ]; then
-    export PS1='[\u@\h]\w\# '
-else
-    export PS1='[\u@\h]\w\$ '
-fi
-
-alias ll='ls -alF'
-alias la='ls -A'
-alias l='ls -CF'
-
-export TERM=vt100
-export TERMINFO=/usr/share/terminfo
diff --git a/device/milkv-duo/br_overlay/etc/run_usb.sh b/device/milkv-duo/br_overlay/etc/run_usb.sh
deleted file mode 100755
index 760c702845..0000000000
--- a/device/milkv-duo/br_overlay/etc/run_usb.sh
+++ /dev/null
@@ -1,292 +0,0 @@
-CLASS=acm
-VID=0x3346
-PID=0x1003
-MSC_PID=0x1008
-RNDIS_PID=0x1009
-UVC_PID=0x100A
-UAC_PID=0x100B
-ADB_VID=0x18D1
-ADB_PID=0x4EE0
-ADB_PID_M1=0x4EE2
-ADB_PID_M2=0x4EE4
-MANUFACTURER="Cvitek"
-PRODUCT="USB Com Port"
-PRODUCT_RNDIS="RNDIS"
-PRODUCT_UVC="UVC"
-PRODUCT_UAC="UAC"
-PRODUCT_ADB="ADB"
-ADBD_PATH=/usr/bin/
-SERIAL="0123456789"
-MSC_FILE=$3
-CVI_DIR=/tmp/usb
-CVI_GADGET=$CVI_DIR/usb_gadget/cvitek
-CVI_FUNC=$CVI_GADGET/functions
-FUNC_NUM=0
-MAX_EP_NUM=4
-TMP_NUM=0
-INTF_NUM=0
-EP_IN=0
-EP_OUT=0
-
-case "$2" in
-  acm)
-	CLASS=acm
-	;;
-  msc)
-	CLASS=mass_storage
-	PID=$MSC_PID
-	;;
-  cvg)
-	CLASS=cvg
-	;;
-  rndis)
-	CLASS=rndis
-	PID=$RNDIS_PID
-	PRODUCT=$PRODUCT_RNDIS
-	;;
-  uvc)
-	CLASS=uvc
-	PID=$UVC_PID
-	PRODUCT=$PRODUCT_UVC
-	;;
-  uac1)
-	CLASS=uac1
-	PID=$UAC_PID
-	PRODUCT=$PRODUCT_UAC
-	;;
-  adb)
-	CLASS=ffs.adb
-	VID=$ADB_VID
-	PID=$ADB_PID
-	PRODUCT=$PRODUCT_ADB
-	;;
-  *)
-	if [ "$1" = "probe" ] ; then
-	  echo "Usage: $0 probe {acm|msc|cvg|rndis|uvc|uac1|adb}"
-	  exit 1
-	fi
-esac
-
-calc_func() {
-  FUNC_NUM=$(ls $CVI_GADGET/functions -l | grep ^d | wc -l)
-  echo "$FUNC_NUM file(s)"
-}
-
-res_check() {
-  TMP_NUM=$(find $CVI_GADGET/functions/ -name "acm*" | wc -l)
-  EP_OUT=$(($EP_OUT+$TMP_NUM))
-  TMP_NUM=$(($TMP_NUM * 2))
-  EP_IN=$(($EP_IN+$TMP_NUM))
-  INTF_NUM=$(($INTF_NUM+$TMP_NUM))
-  TMP_NUM=$(find $CVI_GADGET/functions/ -name "mass_storage*" | wc -l)
-  EP_IN=$(($EP_IN+$TMP_NUM))
-  EP_OUT=$(($EP_OUT+$TMP_NUM))
-  INTF_NUM=$(($INTF_NUM+$TMP_NUM))
-  TMP_NUM=$(find $CVI_GADGET/functions/ -name "cvg*" | wc -l)
-  EP_IN=$(($EP_IN+$TMP_NUM))
-  EP_OUT=$(($EP_OUT+$TMP_NUM))
-  INTF_NUM=$(($INTF_NUM+$TMP_NUM))
-  TMP_NUM=$(find $CVI_GADGET/functions/ -name "rndis*" | wc -l)
-  EP_OUT=$(($EP_OUT+$TMP_NUM))
-  TMP_NUM=$(($TMP_NUM * 2))
-  EP_IN=$(($EP_IN+$TMP_NUM))
-  INTF_NUM=$(($INTF_NUM+$TMP_NUM))
-  TMP_NUM=$(find $CVI_GADGET/functions/ -name "uvc*" | wc -l)
-  TMP_NUM=$(($TMP_NUM * 2))
-  EP_IN=$(($EP_IN+$TMP_NUM))
-  INTF_NUM=$(($INTF_NUM+$TMP_NUM))
-  TMP_NUM=$(find $CVI_GADGET/functions/ -name "uac1*" | wc -l)
-  TMP_NUM=$(($TMP_NUM * 2))
-  EP_IN=$(($EP_IN+$TMP_NUM))
-  EP_OUT=$(($EP_OUT+$TMP_NUM))
-  INTF_NUM=$(($INTF_NUM+$TMP_NUM))
-  TMP_NUM=$(find $CVI_GADGET/functions/ -name ffs.adb | wc -l)
-  EP_IN=$(($EP_IN+$TMP_NUM))
-  EP_OUT=$(($EP_OUT+$TMP_NUM))
-  INTF_NUM=$(($INTF_NUM+$TMP_NUM))
-
-  if [ "$CLASS" = "acm" ] ; then
-    EP_IN=$(($EP_IN+2))
-    EP_OUT=$(($EP_OUT+1))
-  fi
-  if [ "$CLASS" = "mass_storage" ] ; then
-    EP_IN=$(($EP_IN+1))
-    EP_OUT=$(($EP_OUT+1))
-  fi
-  if [ "$CLASS" = "cvg" ] ; then
-    EP_IN=$(($EP_IN+1))
-    EP_OUT=$(($EP_OUT+1))
-  fi
-  if [ "$CLASS" = "rndis" ] ; then
-    EP_IN=$(($EP_IN+2))
-    EP_OUT=$(($EP_OUT+1))
-  fi
-  if [ "$CLASS" = "uvc" ] ; then
-    EP_IN=$(($EP_IN+2))
-  fi
-  if [ "$CLASS" = "uac1" ] ; then
-    EP_IN=$(($EP_IN+1))
-    EP_OUT=$(($EP_OUT+1))
-  fi
-  if [ "$CLASS" = "ffs.adb" ] ; then
-    EP_IN=$(($EP_IN+1))
-    EP_OUT=$(($EP_OUT+1))
-  fi
-  echo "$EP_IN in ep"
-  echo "$EP_OUT out ep"
-  if [ $EP_IN -gt $MAX_EP_NUM ]; then
-    echo "reach maximum resource"
-    exit 1
-  fi
-  if [ $EP_OUT -gt $MAX_EP_NUM ]; then
-    echo "reach maximum resource"
-    exit 1
-  fi
-}
-
-probe() {
-  if [ ! -d $CVI_DIR ]; then
-    mkdir $CVI_DIR
-  fi
-  if [ ! -d $CVI_DIR/usb_gadget ]; then
-    # Enale USB ConfigFS
-    mount none $CVI_DIR -t configfs
-    # Create gadget dev
-    mkdir $CVI_GADGET
-    # Set the VID and PID
-    echo $VID >$CVI_GADGET/idVendor
-    echo $PID >$CVI_GADGET/idProduct
-    # Set the product information string
-    mkdir $CVI_GADGET/strings/0x409
-    echo $MANUFACTURER>$CVI_GADGET/strings/0x409/manufacturer
-    echo $PRODUCT>$CVI_GADGET/strings/0x409/product
-    echo $SERIAL>$CVI_GADGET/strings/0x409/serialnumber
-    # Set the USB configuration
-    mkdir $CVI_GADGET/configs/c.1
-    mkdir $CVI_GADGET/configs/c.1/strings/0x409
-    echo "config1">$CVI_GADGET/configs/c.1/strings/0x409/configuration
-    # Set the MaxPower of USB descriptor
-    echo 120 >$CVI_GADGET/configs/c.1/MaxPower
-  fi
-  # get current functions number
-  calc_func
-  # assign the class code for composite device
-  if [ ! $FUNC_NUM -eq 0 ]; then
-    echo 0xEF >$CVI_GADGET/bDeviceClass
-    echo 0x02 >$CVI_GADGET/bDeviceSubClass
-    echo 0x01 >$CVI_GADGET/bDeviceProtocol
-  fi
-  # resource check
-  res_check
-  # create the desired function
-  if [ "$CLASS" = "ffs.adb" ] ; then
-    # adb shall be the last function to probe. Override the pid/vid
-    echo $VID >$CVI_GADGET/idVendor
-    echo $PID >$CVI_GADGET/idProduct
-    # choose pid for different function number
-    if [ $INTF_NUM -eq 1 ]; then
-      echo $ADB_PID_M1 >$CVI_GADGET/idProduct
-    fi
-    if [ $INTF_NUM -eq 2 ]; then
-      echo $ADB_PID_M2 >$CVI_GADGET/idProduct
-    fi
-    mkdir $CVI_GADGET/functions/$CLASS
-  else
-    mkdir $CVI_GADGET/functions/$CLASS.usb$FUNC_NUM
-  fi
-  if [ "$CLASS" = "mass_storage" ] ; then
-    echo $MSC_FILE >$CVI_GADGET/functions/$CLASS.usb$FUNC_NUM/lun.0/file
-  fi
-  if [ "$CLASS" = "rndis" ] ; then
-    #OS STRING
-    echo 1 >$CVI_GADGET/os_desc/use
-    echo 0xcd >$CVI_GADGET/os_desc/b_vendor_code
-    echo MSFT100 >$CVI_GADGET/os_desc/qw_sign
-    #COMPATIBLE ID
-    echo RNDIS >$CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/compatible_id
-    #MAKE c.1 THE ONE ASSOCIATED WITH OS DESCRIPTORS
-    ln -s $CVI_GADGET/configs/c.1 $CVI_GADGET/os_desc
-    #MAKE "Icons" EXTENDED PROPERTY
-    mkdir $CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/Icons
-    echo 2 >$CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/Icons/type
-    echo "%SystemRoot%\\system32\\shell32.dll,-233" >$CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/Icons/data
-    #MAKE "Label" EXTENDED PROPERTY
-    mkdir $CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/Label
-    echo 1 >$CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/Label/type
-    echo "XYZ Device" >$CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/Label/data
-  fi
-
-}
-
-start() {
-  # link this function to the configuration
-  calc_func
-  if [ $FUNC_NUM -eq 0 ]; then
-    echo "Functions Empty!"
-    exit 1
-  fi
-  if [ -d $CVI_GADGET/functions/ffs.adb ]; then
-    FUNC_NUM=$(($FUNC_NUM-1))
-  fi
-  for i in `seq 0 $(($FUNC_NUM-1))`;
-  do
-    find $CVI_GADGET/functions/ -name "*.usb$i" | xargs -I % ln -s % $CVI_GADGET/configs/c.1
-  done
-  if [ -d $CVI_GADGET/functions/ffs.adb ]; then
-    ln -s $CVI_GADGET/functions/ffs.adb $CVI_GADGET/configs/c.1
-    mkdir /dev/usb-ffs/adb -p
-    mount -t functionfs adb /dev/usb-ffs/adb
-    if [ -f $ADBD_PATH/adbd ]; then
-	$ADBD_PATH/adbd &
-    fi
-  else
-    # Start the gadget driver
-    UDC=`ls /sys/class/udc/ | awk '{print $1}'`
-    echo ${UDC} >$CVI_GADGET/UDC
-  fi
-}
-
-stop() {
-  if [ -d $CVI_GADGET/configs/c.1/ffs.adb ]; then
-    pkill adbd
-    rm $CVI_GADGET/configs/c.1/ffs.adb
-  else
-    echo "" >$CVI_GADGET/UDC
-  fi
-  find $CVI_GADGET/configs/ -name "*.usb*" | xargs rm -f
-  rmdir $CVI_GADGET/configs/c.*/strings/0x409/
-  tmp_dirs=$(find $CVI_GADGET/os_desc/c.* -type d)
-  if [ -n tmp_dirs ]; then
-    echo "remove os_desc!"
-    rm -rf $CVI_GADGET/os_desc/c.*/
-    find $CVI_GADGET/functions/ -name Icons | xargs rmdir
-    find $CVI_GADGET/functions/ -name Label | xargs rmdir
-  fi
-  rmdir $CVI_GADGET/configs/c.*/
-  rmdir $CVI_GADGET/functions/*
-  rmdir $CVI_GADGET/strings/0x409/
-  rmdir $CVI_GADGET
-  umount $CVI_DIR
-  rmdir $CVI_DIR
-}
-
-case "$1" in
-  start)
-	start
-	;;
-  stop)
-	stop
-	;;
-  probe)
-	probe
-	;;
-  UDC)
-	ls /sys/class/udc/ >$CVI_GADGET/UDC
-	;;
-  *)
-	echo "Usage: $0 probe {acm|msc|cvg|uvc|uac1} {file (msc)}"
-	echo "Usage: $0 start"
-	echo "Usage: $0 stop"
-	exit 1
-esac
-exit $?
diff --git a/device/milkv-duo/br_overlay/etc/uhubon.sh b/device/milkv-duo/br_overlay/etc/uhubon.sh
deleted file mode 100755
index a8256765db..0000000000
--- a/device/milkv-duo/br_overlay/etc/uhubon.sh
+++ /dev/null
@@ -1,83 +0,0 @@
-GPIO_HUBPORT_EN=449
-GPIO_ROLESEL=450
-GPIO_HUBRST=451
-SYS_GPIO=/sys/class/gpio
-
-hub_on() {
-  echo "turn on usb hub"
-  if [ ! -d $SYS_GPIO/gpio$GPIO_HUBPORT_EN ]; then
-      echo $GPIO_HUBPORT_EN >/sys/class/gpio/export
-  fi
-
-  if [ ! -d $SYS_GPIO/gpio$GPIO_ROLESEL ]; then
-      echo $GPIO_ROLESEL >/sys/class/gpio/export
-  fi
-
-  if [ ! -d $SYS_GPIO/gpio$GPIO_HUBRST ]; then
-      echo $GPIO_HUBRST >/sys/class/gpio/export
-  fi
-
-  echo "out" >/sys/class/gpio/gpio$GPIO_HUBPORT_EN/direction
-  echo "out" >/sys/class/gpio/gpio$GPIO_ROLESEL/direction
-  echo "out" >/sys/class/gpio/gpio$GPIO_HUBRST/direction
-
-  echo 1 >/sys/class/gpio/gpio$GPIO_HUBPORT_EN/value
-  echo 0 >/sys/class/gpio/gpio$GPIO_ROLESEL/value
-  echo 0 >/sys/class/gpio/gpio$GPIO_HUBRST/value
-}
-
-hub_off() {
-  echo "turn off usb hub"
-  if [ ! -d $SYS_GPIO/gpio$GPIO_HUBPORT_EN ]; then
-      echo $GPIO_HUBPORT_EN >/sys/class/gpio/export
-  fi
-
-  if [ ! -d $SYS_GPIO/gpio$GPIO_ROLESEL ]; then
-      echo $GPIO_ROLESEL >/sys/class/gpio/export
-  fi
-
-  if [ ! -d $SYS_GPIO/gpio$GPIO_HUBRST ]; then
-      echo $GPIO_HUBRST >/sys/class/gpio/export
-  fi
-
-  echo "out" >/sys/class/gpio/gpio$GPIO_HUBPORT_EN/direction
-  echo "out" >/sys/class/gpio/gpio$GPIO_ROLESEL/direction
-  echo "out" >/sys/class/gpio/gpio$GPIO_HUBRST/direction
-
-  echo 0 >/sys/class/gpio/gpio$GPIO_HUBPORT_EN/value
-  echo 1 >/sys/class/gpio/gpio$GPIO_ROLESEL/value
-  echo 1 >/sys/class/gpio/gpio$GPIO_HUBRST/value
-}
-
-inst_mod() {
-  insmod /mnt/system/ko/configfs.ko
-  insmod /mnt/system/ko/libcomposite.ko
-  insmod /mnt/system/ko/u_serial.ko
-  insmod /mnt/system/ko/usb_f_acm.ko
-  insmod /mnt/system/ko/cvi_usb_f_cvg.ko
-  insmod /mnt/system/ko/usb_f_uvc.ko
-  insmod /mnt/system/ko/usb_f_fs.ko
-  insmod /mnt/system/ko/u_audio.ko
-  insmod /mnt/system/ko/usb_f_uac1.ko
-  insmod /mnt/system/ko/usb_f_serial.ko
-  insmod /mnt/system/ko/usb_f_mass_storage.ko
-  insmod /mnt/system/ko/u_ether.ko
-  insmod /mnt/system/ko/usb_f_ecm.ko
-  insmod /mnt/system/ko/usb_f_eem.ko
-  insmod /mnt/system/ko/usb_f_rndis.ko
-}
-
-case "$1" in
-  host)
-	insmod /mnt/system/ko/dwc2.ko
-  echo host > /proc/cviusb/otg_role
-	;;
-  device)
-	echo device > /proc/cviusb/otg_role
-	;;
-  *)
-	echo "Usage: $0 host"
-	echo "Usage: $0 device"
-	exit 1
-esac
-exit $?
diff --git a/device/milkv-duo/br_overlay/lib/ld-musl-riscv64v0p7_xthead.so.1 b/device/milkv-duo/br_overlay/lib/ld-musl-riscv64v0p7_xthead.so.1
deleted file mode 120000
index 4665bcf84d..0000000000
--- a/device/milkv-duo/br_overlay/lib/ld-musl-riscv64v0p7_xthead.so.1
+++ /dev/null
@@ -1 +0,0 @@
-../usr/lib64v0p7_xthead/lp64d/libc.so
\ No newline at end of file
diff --git a/device/milkv-duo/br_overlay/usr/lib64v0p7_xthead/lp64d/libc.so b/device/milkv-duo/br_overlay/usr/lib64v0p7_xthead/lp64d/libc.so
deleted file mode 100755
index 8a2b8ff7d2..0000000000
Binary files a/device/milkv-duo/br_overlay/usr/lib64v0p7_xthead/lp64d/libc.so and /dev/null differ
diff --git a/device/milkv-duo/br_overlay/usr/local/bin/autologin b/device/milkv-duo/br_overlay/usr/local/bin/autologin
deleted file mode 100755
index 6f12842ec1..0000000000
--- a/device/milkv-duo/br_overlay/usr/local/bin/autologin
+++ /dev/null
@@ -1,2 +0,0 @@
-#! /bin/sh
-exec /bin/login -f root
diff --git a/device/milkv-duo/overlay/mnt/data/install/CviIspTool.sh b/device/milkv-duo/overlay/mnt/data/camera-test/CviIspTool.sh
similarity index 95%
rename from device/milkv-duo/overlay/mnt/data/install/CviIspTool.sh
rename to device/milkv-duo/overlay/mnt/data/camera-test/CviIspTool.sh
index edc77802b8..82aed4b609 100755
--- a/device/milkv-duo/overlay/mnt/data/install/CviIspTool.sh
+++ b/device/milkv-duo/overlay/mnt/data/camera-test/CviIspTool.sh
@@ -100,7 +100,7 @@ echo 256 > /sys/module/cvi_vc_driver/parameters/ARExtraLine
 
 # for eaier debugging, add $PWD to LD_LIBRARY_PATH and PATH
 SCRIPT_SELF=$(cd "$(dirname "$0")"; pwd)
-export LD_LIBRARY_PATH=${SCRIPT_SELF}/lib:${SCRIPT_SELF}/lib/ai:${LD_LIBRARY_PATH}:/mnt/system/usr/lib:/mnt/system/usr/lib/3rd:/lib/3rd
+export LD_LIBRARY_PATH=${SCRIPT_SELF}/lib:/mnt/system/lib:${LD_LIBRARY_PATH}
 
 PATH=${SCRIPT_SELF}:/mnt/system/usr/bin:$PATH
 cd ${SCRIPT_SELF}
diff --git a/device/milkv-duo/overlay/mnt/data/install/cfg_128M.json b/device/milkv-duo/overlay/mnt/data/camera-test/cfg_128M.json
similarity index 100%
rename from device/milkv-duo/overlay/mnt/data/install/cfg_128M.json
rename to device/milkv-duo/overlay/mnt/data/camera-test/cfg_128M.json
diff --git a/device/milkv-duo/overlay/mnt/data/install/cfg_64M.json b/device/milkv-duo/overlay/mnt/data/camera-test/cfg_64M.json
similarity index 100%
rename from device/milkv-duo/overlay/mnt/data/install/cfg_64M.json
rename to device/milkv-duo/overlay/mnt/data/camera-test/cfg_64M.json
diff --git a/device/milkv-duo/overlay/mnt/data/camera-test/isp_tool_daemon b/device/milkv-duo/overlay/mnt/data/camera-test/isp_tool_daemon
new file mode 100755
index 0000000000..764d8025cf
Binary files /dev/null and b/device/milkv-duo/overlay/mnt/data/camera-test/isp_tool_daemon differ
diff --git a/device/milkv-duo256m/overlay/mnt/data/install/lib/libcvi_rtsp.so b/device/milkv-duo/overlay/mnt/data/camera-test/lib/libcvi_rtsp.so
old mode 100755
new mode 100644
similarity index 100%
rename from device/milkv-duo256m/overlay/mnt/data/install/lib/libcvi_rtsp.so
rename to device/milkv-duo/overlay/mnt/data/camera-test/lib/libcvi_rtsp.so
diff --git a/device/milkv-duo/overlay/mnt/data/install/lib/libcvi_rtsp_service.so b/device/milkv-duo/overlay/mnt/data/camera-test/lib/libcvi_rtsp_service.so
old mode 100755
new mode 100644
similarity index 99%
rename from device/milkv-duo/overlay/mnt/data/install/lib/libcvi_rtsp_service.so
rename to device/milkv-duo/overlay/mnt/data/camera-test/lib/libcvi_rtsp_service.so
index 48b89d2584..d533817a77
Binary files a/device/milkv-duo/overlay/mnt/data/install/lib/libcvi_rtsp_service.so and b/device/milkv-duo/overlay/mnt/data/camera-test/lib/libcvi_rtsp_service.so differ
diff --git a/device/milkv-duo/overlay/mnt/data/install/lib/ai/libjson-c.so.5 b/device/milkv-duo/overlay/mnt/data/camera-test/lib/libjson-c.so
similarity index 100%
rename from device/milkv-duo/overlay/mnt/data/install/lib/ai/libjson-c.so.5
rename to device/milkv-duo/overlay/mnt/data/camera-test/lib/libjson-c.so
diff --git a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libjson-c.so.5 b/device/milkv-duo/overlay/mnt/data/camera-test/lib/libjson-c.so.5
similarity index 100%
rename from device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libjson-c.so.5
rename to device/milkv-duo/overlay/mnt/data/camera-test/lib/libjson-c.so.5
diff --git a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libjson-c.so.5.1.0 b/device/milkv-duo/overlay/mnt/data/camera-test/lib/libjson-c.so.5.1.0
similarity index 78%
rename from device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libjson-c.so.5.1.0
rename to device/milkv-duo/overlay/mnt/data/camera-test/lib/libjson-c.so.5.1.0
index f03c794417..c1a7526455 100644
Binary files a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libjson-c.so.5.1.0 and b/device/milkv-duo/overlay/mnt/data/camera-test/lib/libjson-c.so.5.1.0 differ
diff --git a/device/milkv-duo/overlay/mnt/data/install/vc_param_128M.json b/device/milkv-duo/overlay/mnt/data/camera-test/vc_param_128M.json
similarity index 100%
rename from device/milkv-duo/overlay/mnt/data/install/vc_param_128M.json
rename to device/milkv-duo/overlay/mnt/data/camera-test/vc_param_128M.json
diff --git a/device/milkv-duo/overlay/mnt/data/install/vc_param_64M.json b/device/milkv-duo/overlay/mnt/data/camera-test/vc_param_64M.json
similarity index 100%
rename from device/milkv-duo/overlay/mnt/data/install/vc_param_64M.json
rename to device/milkv-duo/overlay/mnt/data/camera-test/vc_param_64M.json
diff --git a/device/milkv-duo/overlay/mnt/data/install/config.ini b/device/milkv-duo/overlay/mnt/data/install/config.ini
deleted file mode 100644
index c8f01b558f..0000000000
--- a/device/milkv-duo/overlay/mnt/data/install/config.ini
+++ /dev/null
@@ -1,8 +0,0 @@
-[LOG]
-level = 3
-[PQBIN]
-isEnableSetPQBin = 1
-SDR_PQBinName = /mnt/data/bin/cvi_sdr_bin
-WDR_PQBinName = /mnt/data/bin/cvi_wdr_bin
-isEnableSetSnsCfgPath = 1
-SnsCfgPath = ./sensor_cfg.ini
diff --git a/device/milkv-duo/overlay/mnt/data/install/cvi_models/retinaface_mnet0.25_342_608.cvimodel b/device/milkv-duo/overlay/mnt/data/install/cvi_models/retinaface_mnet0.25_342_608.cvimodel
deleted file mode 100644
index 5d0b18d7d5..0000000000
Binary files a/device/milkv-duo/overlay/mnt/data/install/cvi_models/retinaface_mnet0.25_342_608.cvimodel and /dev/null differ
diff --git a/device/milkv-duo/overlay/mnt/data/install/cvi_models/version b/device/milkv-duo/overlay/mnt/data/install/cvi_models/version
deleted file mode 100644
index 5743e6b3d2..0000000000
--- a/device/milkv-duo/overlay/mnt/data/install/cvi_models/version
+++ /dev/null
@@ -1,2 +0,0 @@
-[2022-06-13]
-retinaface_mnet0.25_342_608.cvimodel
diff --git a/device/milkv-duo/overlay/mnt/data/install/isp_tool_daemon b/device/milkv-duo/overlay/mnt/data/install/isp_tool_daemon
deleted file mode 100755
index b3a05a334e..0000000000
Binary files a/device/milkv-duo/overlay/mnt/data/install/isp_tool_daemon and /dev/null differ
diff --git a/device/milkv-duo/overlay/mnt/data/install/lib/ai/libavcodec.so b/device/milkv-duo/overlay/mnt/data/install/lib/ai/libavcodec.so
deleted file mode 120000
index a2335869ad..0000000000
--- a/device/milkv-duo/overlay/mnt/data/install/lib/ai/libavcodec.so
+++ /dev/null
@@ -1 +0,0 @@
-libavcodec.so.58.106.100
\ No newline at end of file
diff --git a/device/milkv-duo/overlay/mnt/data/install/lib/ai/libavcodec.so.58 b/device/milkv-duo/overlay/mnt/data/install/lib/ai/libavcodec.so.58
deleted file mode 120000
index a2335869ad..0000000000
--- a/device/milkv-duo/overlay/mnt/data/install/lib/ai/libavcodec.so.58
+++ /dev/null
@@ -1 +0,0 @@
-libavcodec.so.58.106.100
\ No newline at end of file
diff --git a/device/milkv-duo/overlay/mnt/data/install/lib/ai/libavcodec.so.58.106.100 b/device/milkv-duo/overlay/mnt/data/install/lib/ai/libavcodec.so.58.106.100
deleted file mode 100755
index 5db945744c..0000000000
Binary files a/device/milkv-duo/overlay/mnt/data/install/lib/ai/libavcodec.so.58.106.100 and /dev/null differ
diff --git a/device/milkv-duo/overlay/mnt/data/install/lib/ai/libavformat.so b/device/milkv-duo/overlay/mnt/data/install/lib/ai/libavformat.so
deleted file mode 120000
index 8af9d51da6..0000000000
--- a/device/milkv-duo/overlay/mnt/data/install/lib/ai/libavformat.so
+++ /dev/null
@@ -1 +0,0 @@
-libavformat.so.58.58.100
\ No newline at end of file
diff --git a/device/milkv-duo/overlay/mnt/data/install/lib/ai/libavformat.so.58 b/device/milkv-duo/overlay/mnt/data/install/lib/ai/libavformat.so.58
deleted file mode 120000
index 8af9d51da6..0000000000
--- a/device/milkv-duo/overlay/mnt/data/install/lib/ai/libavformat.so.58
+++ /dev/null
@@ -1 +0,0 @@
-libavformat.so.58.58.100
\ No newline at end of file
diff --git a/device/milkv-duo/overlay/mnt/data/install/lib/ai/libavformat.so.58.58.100 b/device/milkv-duo/overlay/mnt/data/install/lib/ai/libavformat.so.58.58.100
deleted file mode 100755
index 5cc70e830d..0000000000
Binary files a/device/milkv-duo/overlay/mnt/data/install/lib/ai/libavformat.so.58.58.100 and /dev/null differ
diff --git a/device/milkv-duo/overlay/mnt/data/install/lib/ai/libavutil.so b/device/milkv-duo/overlay/mnt/data/install/lib/ai/libavutil.so
deleted file mode 120000
index f932704fc9..0000000000
--- a/device/milkv-duo/overlay/mnt/data/install/lib/ai/libavutil.so
+++ /dev/null
@@ -1 +0,0 @@
-libavutil.so.56.59.100
\ No newline at end of file
diff --git a/device/milkv-duo/overlay/mnt/data/install/lib/ai/libavutil.so.56 b/device/milkv-duo/overlay/mnt/data/install/lib/ai/libavutil.so.56
deleted file mode 120000
index f932704fc9..0000000000
--- a/device/milkv-duo/overlay/mnt/data/install/lib/ai/libavutil.so.56
+++ /dev/null
@@ -1 +0,0 @@
-libavutil.so.56.59.100
\ No newline at end of file
diff --git a/device/milkv-duo/overlay/mnt/data/install/lib/ai/libavutil.so.56.59.100 b/device/milkv-duo/overlay/mnt/data/install/lib/ai/libavutil.so.56.59.100
deleted file mode 100755
index 668036eefa..0000000000
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diff --git a/device/milkv-duo/overlay/mnt/data/install/lib/libsample.so b/device/milkv-duo/overlay/mnt/data/install/lib/libsample.so
deleted file mode 100755
index 61ff1f71b9..0000000000
Binary files a/device/milkv-duo/overlay/mnt/data/install/lib/libsample.so and /dev/null differ
diff --git a/device/milkv-duo/overlay/mnt/data/install/lib/libsns_full.so b/device/milkv-duo/overlay/mnt/data/install/lib/libsns_full.so
deleted file mode 100755
index d46d280062..0000000000
Binary files a/device/milkv-duo/overlay/mnt/data/install/lib/libsns_full.so and /dev/null differ
diff --git a/device/milkv-duo/overlay/mnt/data/install/lib/libsys.so b/device/milkv-duo/overlay/mnt/data/install/lib/libsys.so
deleted file mode 100755
index fc2f0a917e..0000000000
Binary files a/device/milkv-duo/overlay/mnt/data/install/lib/libsys.so and /dev/null differ
diff --git a/device/milkv-duo/overlay/mnt/data/install/lib/libtinyalsa.so b/device/milkv-duo/overlay/mnt/data/install/lib/libtinyalsa.so
deleted file mode 100644
index 00190c1523..0000000000
Binary files a/device/milkv-duo/overlay/mnt/data/install/lib/libtinyalsa.so and /dev/null differ
diff --git a/device/milkv-duo/overlay/mnt/data/install/lib/libvdec.so b/device/milkv-duo/overlay/mnt/data/install/lib/libvdec.so
deleted file mode 100755
index caadd243ff..0000000000
Binary files a/device/milkv-duo/overlay/mnt/data/install/lib/libvdec.so and /dev/null differ
diff --git a/device/milkv-duo/overlay/mnt/data/install/lib/libvenc.so b/device/milkv-duo/overlay/mnt/data/install/lib/libvenc.so
deleted file mode 100755
index b4500e1ce4..0000000000
Binary files a/device/milkv-duo/overlay/mnt/data/install/lib/libvenc.so and /dev/null differ
diff --git a/device/milkv-duo/overlay/mnt/data/install/lib/libvpu.so b/device/milkv-duo/overlay/mnt/data/install/lib/libvpu.so
deleted file mode 100755
index 27b00f7db8..0000000000
Binary files a/device/milkv-duo/overlay/mnt/data/install/lib/libvpu.so and /dev/null differ
diff --git a/device/milkv-duo/overlay/mnt/data/install/pqtool_definition.json b/device/milkv-duo/overlay/mnt/data/install/pqtool_definition.json
deleted file mode 100644
index 7cf034c9f0..0000000000
Binary files a/device/milkv-duo/overlay/mnt/data/install/pqtool_definition.json and /dev/null differ
diff --git a/device/milkv-duo/overlay/mnt/data/install/test/empty.json b/device/milkv-duo/overlay/mnt/data/install/test/empty.json
deleted file mode 100755
index 0967ef424b..0000000000
--- a/device/milkv-duo/overlay/mnt/data/install/test/empty.json
+++ /dev/null
@@ -1 +0,0 @@
-{}
diff --git a/device/milkv-duo/overlay/mnt/data/install/test/h264.json b/device/milkv-duo/overlay/mnt/data/install/test/h264.json
deleted file mode 100755
index ea84e449c9..0000000000
--- a/device/milkv-duo/overlay/mnt/data/install/test/h264.json
+++ /dev/null
@@ -1,5 +0,0 @@
-{
-    "video-src-info": [{
-        "codec": "264"
-    }]
-}
diff --git a/device/milkv-duo/overlay/mnt/data/install/test/h265.json b/device/milkv-duo/overlay/mnt/data/install/test/h265.json
deleted file mode 100755
index 3671480c3a..0000000000
--- a/device/milkv-duo/overlay/mnt/data/install/test/h265.json
+++ /dev/null
@@ -1,5 +0,0 @@
-{
-    "video-src-info": [{
-        "codec": "265"
-    }]
-}
diff --git a/device/milkv-duo/overlay/mnt/data/install/test/retinaface.json b/device/milkv-duo/overlay/mnt/data/install/test/retinaface.json
deleted file mode 100755
index 52f48330e6..0000000000
--- a/device/milkv-duo/overlay/mnt/data/install/test/retinaface.json
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-    "model": "../cvi_models/retinaface_mnet0.25_342_608.cvimodel",
-    "video-src-info": [{
-        "chn": 0,
-        "venc-bind-vpss": false,
-        "enable-retinaface": true
-    }]
-}
diff --git a/device/milkv-duo/overlay/mnt/data/install/test/rtsp_client b/device/milkv-duo/overlay/mnt/data/install/test/rtsp_client
deleted file mode 100755
index e209455797..0000000000
Binary files a/device/milkv-duo/overlay/mnt/data/install/test/rtsp_client and /dev/null differ
diff --git a/device/milkv-duo/overlay/mnt/data/install/test/rtsp_server b/device/milkv-duo/overlay/mnt/data/install/test/rtsp_server
deleted file mode 100755
index 4a86e9c02f..0000000000
Binary files a/device/milkv-duo/overlay/mnt/data/install/test/rtsp_server and /dev/null differ
diff --git a/device/milkv-duo/overlay/mnt/data/install/test/test_aisdk_lib b/device/milkv-duo/overlay/mnt/data/install/test/test_aisdk_lib
deleted file mode 100755
index cee5772c92..0000000000
Binary files a/device/milkv-duo/overlay/mnt/data/install/test/test_aisdk_lib and /dev/null differ
diff --git a/device/milkv-duo/overlay/mnt/data/install/test/test_cvi_rtsp.sh b/device/milkv-duo/overlay/mnt/data/install/test/test_cvi_rtsp.sh
deleted file mode 100755
index 0805dc580e..0000000000
--- a/device/milkv-duo/overlay/mnt/data/install/test/test_cvi_rtsp.sh
+++ /dev/null
@@ -1,62 +0,0 @@
-#!/bin/sh
-
-export LD_LIBRARY_PATH=$(pwd)/../lib:$(pwd)/../aisdk_lib/lib:$LD_LIBRARY_PATH
-
-SILENT=0
-
-usage() {
-    echo "$0 -t [ unittest | ai | all ] [-s]"
-    echo "    -t test item"
-    echo "    -v silent"
-}
-
-while getopts 'st:' c
-do
-  case $c in
-    s) SILENT=1;;
-    t)
-        TYPE=$OPTARG
-        if [ $TYPE != "all" -a $TYPE != "ai" -a $TYPE != "unittest" ]; then
-            usage
-            exit 1
-        fi
-        ;;
-     *)
-        usage
-        exit 1
-  esac
-done
-
-if [ "$TYPE" = "" ]; then
-    usage
-    exit 1
-fi
-
-if [ $TYPE = "unittest" -o $TYPE = "all" ]; then
-    echo "CVI_RTSP UNITTEST TEST"
-    if [ $SILENT = 1 ]; then
-        ./test_unittest > /dev/null 2>&1
-    else
-        ./test_unittest
-    fi
-
-    if [ $? = 0 ]; then
-        echo "TEST-PASS"
-    else
-        echo "TEST-FAIL"
-    fi
-fi
-
-if [ $TYPE = "ai" -o $TYPE = "all" ]; then
-    echo "CVI_RTSP AISDK_LIB TEST"
-    if [ $SILENT = 1 ]; then
-        ./test_aisdk_lib > /dev/null 2>&1
-    else
-        ./test_aisdk_lib
-    fi
-    if [ $? = 0 ]; then
-        echo "TEST-PASS"
-    else
-        echo "TEST-FAIL"
-    fi
-fi
diff --git a/device/milkv-duo/overlay/mnt/data/install/test/test_streaming.sh b/device/milkv-duo/overlay/mnt/data/install/test/test_streaming.sh
deleted file mode 100755
index 5819b7fa2b..0000000000
--- a/device/milkv-duo/overlay/mnt/data/install/test/test_streaming.sh
+++ /dev/null
@@ -1,57 +0,0 @@
-#!/bin/sh
-
-SILENT=0
-export LD_LIBRARY_PATH=$(pwd)/../lib:$LD_LIBRARY_PATH
-
-usage() {
-    echo "$0 -t [ h264 | h265 ] [-s]"
-    echo "    -t test item"
-    echo "    -v silent"
-}
-
-run_rtsp_server() {
-    if [ $SILENT = 1 ]; then
-        timeout 10 ./rtsp_server ${TYPE}.json > /dev/null 2>&1
-    else
-        timeout 10 ./rtsp_server ${TYPE}.json
-    fi
-}
-
-rtsp_client() {
-    if [ $SILENT = 1 ]; then
-        timeout 5 ./rtsp_client rtsp://127.0.0.1/stream0 > /dev/null 2>&1
-    else
-        timeout 5 ./rtsp_client rtsp://127.0.0.1/stream0
-    fi
-    if [ $? = 0 ]; then
-        echo "TEST-PASS"
-    else
-        echo "TEST-FAIL"
-    fi
-}
-
-while getopts 'st:' c
-do
-  case $c in
-    s) SILENT=1;;
-    t)
-        TYPE=$OPTARG
-        if [ $TYPE != "h264" -a $TYPE != "h265" ]; then
-            usage
-            exit 1
-        fi
-        ;;
-     *)
-        usage
-        exit 1
-  esac
-done
-
-if [ "$TYPE" = "" ]; then
-    usage
-    exit 1
-fi
-
-run_rtsp_server &
-sleep 2
-rtsp_client
diff --git a/device/milkv-duo/overlay/mnt/data/install/test/test_unittest b/device/milkv-duo/overlay/mnt/data/install/test/test_unittest
deleted file mode 100755
index 2f2cf9431b..0000000000
Binary files a/device/milkv-duo/overlay/mnt/data/install/test/test_unittest and /dev/null differ
diff --git a/device/milkv-duo/overlay/mnt/data/sensor_cfg.ini b/device/milkv-duo/overlay/mnt/data/sensor_cfg.ini
index 4f4f1c3fff..0299a63a25 120000
--- a/device/milkv-duo/overlay/mnt/data/sensor_cfg.ini
+++ b/device/milkv-duo/overlay/mnt/data/sensor_cfg.ini
@@ -1 +1 @@
-sensor_cfg_gc2083.ini
\ No newline at end of file
+sensor_cfg_GC2083.ini
\ No newline at end of file
diff --git a/device/milkv-duo/overlay/mnt/data/sensor_cfg_gc2083.ini b/device/milkv-duo/overlay/mnt/data/sensor_cfg_GC2083.ini
similarity index 100%
rename from device/milkv-duo/overlay/mnt/data/sensor_cfg_gc2083.ini
rename to device/milkv-duo/overlay/mnt/data/sensor_cfg_GC2083.ini
diff --git a/device/milkv-duo/overlay/mnt/data/sensor_cfg_OV5647.ini b/device/milkv-duo/overlay/mnt/data/sensor_cfg_OV5647.ini
new file mode 100644
index 0000000000..ad192c2bad
--- /dev/null
+++ b/device/milkv-duo/overlay/mnt/data/sensor_cfg_OV5647.ini
@@ -0,0 +1,14 @@
+;section for source
+[source]
+;type = SOURCE_USER_FE
+dev_num = 1
+;section for sensor
+[sensor] 
+;sensor name 
+name = OV_OV5647_MIPI_2M_30FPS_10BIT
+;bus/i2c dev number
+bus_id = 1
+sns_i2c_addr = 36
+mipi_dev = 0
+lane_id = 3, 2, 4, -1, -1
+pn_swap = 0, 0, 0,  0,  0
diff --git a/device/milkv-duo/overlay/mnt/data/sensor_cfg_default.ini b/device/milkv-duo/overlay/mnt/data/sensor_cfg_SC200AI.ini
similarity index 100%
rename from device/milkv-duo/overlay/mnt/data/sensor_cfg_default.ini
rename to device/milkv-duo/overlay/mnt/data/sensor_cfg_SC200AI.ini
diff --git a/device/milkv-duo/overlay/mnt/system/usr/bin/camera-test.sh b/device/milkv-duo/overlay/mnt/system/usr/bin/camera-test.sh
new file mode 100755
index 0000000000..aad4e718ae
--- /dev/null
+++ b/device/milkv-duo/overlay/mnt/system/usr/bin/camera-test.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+cd /mnt/data/camera-test/
+
+./CviIspTool.sh 64M
diff --git a/device/milkv-duo256m-lite/br_overlay b/device/milkv-duo256m-lite/br_overlay
deleted file mode 120000
index 8490ca6fe4..0000000000
--- a/device/milkv-duo256m-lite/br_overlay
+++ /dev/null
@@ -1 +0,0 @@
-../milkv-duo256m/br_overlay
\ No newline at end of file
diff --git a/device/milkv-duo256m/br_overlay/etc/dnsmasq.conf b/device/milkv-duo256m/br_overlay/etc/dnsmasq.conf
deleted file mode 100644
index fcdb620ffa..0000000000
--- a/device/milkv-duo256m/br_overlay/etc/dnsmasq.conf
+++ /dev/null
@@ -1,4 +0,0 @@
-interface=usb0
-dhcp-range=192.168.42.2,192.168.42.242,1h
-dhcp-option=3
-dhcp-option=6
diff --git a/device/milkv-duo256m/br_overlay/etc/init.d/S99user b/device/milkv-duo256m/br_overlay/etc/init.d/S99user
deleted file mode 100755
index 32b5248454..0000000000
--- a/device/milkv-duo256m/br_overlay/etc/init.d/S99user
+++ /dev/null
@@ -1,50 +0,0 @@
-#!/bin/sh
-${CVI_SHOPTS}
-#
-# Start firmware
-#
-export USERDATAPATH=/mnt/data/
-export SYSTEMPATH=/mnt/system/
-
-case "$1" in
-  start)
-        echo "init mpp system..."
-        if [ -d $SYSTEMPATH/ko ]; then
-                sh $SYSTEMPATH/ko/loadsystemko.sh
-        fi
-
-        echo "Starting app..."
-
-        if [ -f $SYSTEMPATH/duo-init.sh ]; then
-                . $SYSTEMPATH/duo-init.sh &
-        fi
-
-        if [ -f $SYSTEMPATH/blink.sh ]; then
-                . $SYSTEMPATH/blink.sh &
-        fi
-
-	if [ -f $SYSTEMPATH/usb.sh ]; then
-                . $SYSTEMPATH/usb.sh &
-        fi
-
-        if [ -f $USERDATAPATH/auto.sh ]; then
-                usleep 30000
-                . $USERDATAPATH/auto.sh &
-		exit 1
-        fi
-	if [ -f $SYSTEMPATH/auto.sh ]; then
-                usleep 30000
-                . $SYSTEMPATH/auto.sh &
-        fi
-        ;;
-  stop)
-        ;;
-  restart|reload)
-        ;;
-  *)
-        echo "Usage: $0 {start|stop|restart}"
-        exit 1
-esac
-
-exit $?
-
diff --git a/device/milkv-duo256m/br_overlay/etc/inittab b/device/milkv-duo256m/br_overlay/etc/inittab
deleted file mode 100644
index 2c9793ce9a..0000000000
--- a/device/milkv-duo256m/br_overlay/etc/inittab
+++ /dev/null
@@ -1,40 +0,0 @@
-# /etc/inittab
-#
-# Copyright (C) 2001 Erik Andersen <andersen@codepoet.org>
-#
-# Note: BusyBox init doesn't support runlevels.  The runlevels field is
-# completely ignored by BusyBox init. If you want runlevels, use
-# sysvinit.
-#
-# Format for each entry: <id>:<runlevels>:<action>:<process>
-#
-# id        == tty to run on, or empty for /dev/console
-# runlevels == ignored
-# action    == one of sysinit, respawn, askfirst, wait, and once
-# process   == program to run
-
-# Startup the system
-::sysinit:/bin/mount -t proc proc /proc
-::sysinit:/bin/mount -o remount,rw /
-::sysinit:/bin/mkdir -p /dev/pts /dev/shm
-::sysinit:/bin/mount -a
-::sysinit:/sbin/swapon -a
-null::sysinit:/bin/ln -sf /proc/self/fd /dev/fd
-null::sysinit:/bin/ln -sf /proc/self/fd/0 /dev/stdin
-null::sysinit:/bin/ln -sf /proc/self/fd/1 /dev/stdout
-null::sysinit:/bin/ln -sf /proc/self/fd/2 /dev/stderr
-::sysinit:/bin/hostname -F /etc/hostname
-# now run any rc scripts
-::sysinit:/etc/init.d/rcS
-
-# Put a getty on the serial port
-# console::respawn:/sbin/getty -L  console 0 vt100 # GENERIC_SERIAL
-console::respawn:/sbin/getty -L  console 115200 vt100 -n -l /usr/local/bin/autologin
-
-# Stuff to do for the 3-finger salute
-#::ctrlaltdel:/sbin/reboot
-
-# Stuff to do before rebooting
-::shutdown:/etc/init.d/rcK
-::shutdown:/sbin/swapoff -a
-::shutdown:/bin/umount -a -r
diff --git a/device/milkv-duo256m/br_overlay/etc/profile b/device/milkv-duo256m/br_overlay/etc/profile
deleted file mode 100644
index d99b378634..0000000000
--- a/device/milkv-duo256m/br_overlay/etc/profile
+++ /dev/null
@@ -1,37 +0,0 @@
-export PATH="/bin:/sbin:/usr/bin:/usr/sbin"
-export PATH="/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin:/mnt/system/usr/bin:/mnt/system/usr/sbin:/mnt/data/bin:/mnt/data/sbin"
-
-if [ "$PS1" ]; then
-	if [ "`id -u`" -eq 0 ]; then
-		export PS1='# '
-	else
-		export PS1='$ '
-	fi
-fi
-
-export PAGER='/bin/more '
-export EDITOR='/bin/vi'
-
-# Source configuration files from /etc/profile.d
-for i in /etc/profile.d/*.sh ; do
-	if [ -r "$i" ]; then
-		. $i
-	fi
-	unset i
-done
-
-export HOSTNAME="$(hostname)"
-export OLDPWD=/root
-
-if [ '$USER' == 'root' ]; then
-    export PS1='[\u@\h]\w\# '
-else
-    export PS1='[\u@\h]\w\$ '
-fi
-
-alias ll='ls -alF'
-alias la='ls -A'
-alias l='ls -CF'
-
-export TERM=vt100
-export TERMINFO=/usr/share/terminfo
diff --git a/device/milkv-duo256m/br_overlay/etc/run_usb.sh b/device/milkv-duo256m/br_overlay/etc/run_usb.sh
deleted file mode 100755
index 760c702845..0000000000
--- a/device/milkv-duo256m/br_overlay/etc/run_usb.sh
+++ /dev/null
@@ -1,292 +0,0 @@
-CLASS=acm
-VID=0x3346
-PID=0x1003
-MSC_PID=0x1008
-RNDIS_PID=0x1009
-UVC_PID=0x100A
-UAC_PID=0x100B
-ADB_VID=0x18D1
-ADB_PID=0x4EE0
-ADB_PID_M1=0x4EE2
-ADB_PID_M2=0x4EE4
-MANUFACTURER="Cvitek"
-PRODUCT="USB Com Port"
-PRODUCT_RNDIS="RNDIS"
-PRODUCT_UVC="UVC"
-PRODUCT_UAC="UAC"
-PRODUCT_ADB="ADB"
-ADBD_PATH=/usr/bin/
-SERIAL="0123456789"
-MSC_FILE=$3
-CVI_DIR=/tmp/usb
-CVI_GADGET=$CVI_DIR/usb_gadget/cvitek
-CVI_FUNC=$CVI_GADGET/functions
-FUNC_NUM=0
-MAX_EP_NUM=4
-TMP_NUM=0
-INTF_NUM=0
-EP_IN=0
-EP_OUT=0
-
-case "$2" in
-  acm)
-	CLASS=acm
-	;;
-  msc)
-	CLASS=mass_storage
-	PID=$MSC_PID
-	;;
-  cvg)
-	CLASS=cvg
-	;;
-  rndis)
-	CLASS=rndis
-	PID=$RNDIS_PID
-	PRODUCT=$PRODUCT_RNDIS
-	;;
-  uvc)
-	CLASS=uvc
-	PID=$UVC_PID
-	PRODUCT=$PRODUCT_UVC
-	;;
-  uac1)
-	CLASS=uac1
-	PID=$UAC_PID
-	PRODUCT=$PRODUCT_UAC
-	;;
-  adb)
-	CLASS=ffs.adb
-	VID=$ADB_VID
-	PID=$ADB_PID
-	PRODUCT=$PRODUCT_ADB
-	;;
-  *)
-	if [ "$1" = "probe" ] ; then
-	  echo "Usage: $0 probe {acm|msc|cvg|rndis|uvc|uac1|adb}"
-	  exit 1
-	fi
-esac
-
-calc_func() {
-  FUNC_NUM=$(ls $CVI_GADGET/functions -l | grep ^d | wc -l)
-  echo "$FUNC_NUM file(s)"
-}
-
-res_check() {
-  TMP_NUM=$(find $CVI_GADGET/functions/ -name "acm*" | wc -l)
-  EP_OUT=$(($EP_OUT+$TMP_NUM))
-  TMP_NUM=$(($TMP_NUM * 2))
-  EP_IN=$(($EP_IN+$TMP_NUM))
-  INTF_NUM=$(($INTF_NUM+$TMP_NUM))
-  TMP_NUM=$(find $CVI_GADGET/functions/ -name "mass_storage*" | wc -l)
-  EP_IN=$(($EP_IN+$TMP_NUM))
-  EP_OUT=$(($EP_OUT+$TMP_NUM))
-  INTF_NUM=$(($INTF_NUM+$TMP_NUM))
-  TMP_NUM=$(find $CVI_GADGET/functions/ -name "cvg*" | wc -l)
-  EP_IN=$(($EP_IN+$TMP_NUM))
-  EP_OUT=$(($EP_OUT+$TMP_NUM))
-  INTF_NUM=$(($INTF_NUM+$TMP_NUM))
-  TMP_NUM=$(find $CVI_GADGET/functions/ -name "rndis*" | wc -l)
-  EP_OUT=$(($EP_OUT+$TMP_NUM))
-  TMP_NUM=$(($TMP_NUM * 2))
-  EP_IN=$(($EP_IN+$TMP_NUM))
-  INTF_NUM=$(($INTF_NUM+$TMP_NUM))
-  TMP_NUM=$(find $CVI_GADGET/functions/ -name "uvc*" | wc -l)
-  TMP_NUM=$(($TMP_NUM * 2))
-  EP_IN=$(($EP_IN+$TMP_NUM))
-  INTF_NUM=$(($INTF_NUM+$TMP_NUM))
-  TMP_NUM=$(find $CVI_GADGET/functions/ -name "uac1*" | wc -l)
-  TMP_NUM=$(($TMP_NUM * 2))
-  EP_IN=$(($EP_IN+$TMP_NUM))
-  EP_OUT=$(($EP_OUT+$TMP_NUM))
-  INTF_NUM=$(($INTF_NUM+$TMP_NUM))
-  TMP_NUM=$(find $CVI_GADGET/functions/ -name ffs.adb | wc -l)
-  EP_IN=$(($EP_IN+$TMP_NUM))
-  EP_OUT=$(($EP_OUT+$TMP_NUM))
-  INTF_NUM=$(($INTF_NUM+$TMP_NUM))
-
-  if [ "$CLASS" = "acm" ] ; then
-    EP_IN=$(($EP_IN+2))
-    EP_OUT=$(($EP_OUT+1))
-  fi
-  if [ "$CLASS" = "mass_storage" ] ; then
-    EP_IN=$(($EP_IN+1))
-    EP_OUT=$(($EP_OUT+1))
-  fi
-  if [ "$CLASS" = "cvg" ] ; then
-    EP_IN=$(($EP_IN+1))
-    EP_OUT=$(($EP_OUT+1))
-  fi
-  if [ "$CLASS" = "rndis" ] ; then
-    EP_IN=$(($EP_IN+2))
-    EP_OUT=$(($EP_OUT+1))
-  fi
-  if [ "$CLASS" = "uvc" ] ; then
-    EP_IN=$(($EP_IN+2))
-  fi
-  if [ "$CLASS" = "uac1" ] ; then
-    EP_IN=$(($EP_IN+1))
-    EP_OUT=$(($EP_OUT+1))
-  fi
-  if [ "$CLASS" = "ffs.adb" ] ; then
-    EP_IN=$(($EP_IN+1))
-    EP_OUT=$(($EP_OUT+1))
-  fi
-  echo "$EP_IN in ep"
-  echo "$EP_OUT out ep"
-  if [ $EP_IN -gt $MAX_EP_NUM ]; then
-    echo "reach maximum resource"
-    exit 1
-  fi
-  if [ $EP_OUT -gt $MAX_EP_NUM ]; then
-    echo "reach maximum resource"
-    exit 1
-  fi
-}
-
-probe() {
-  if [ ! -d $CVI_DIR ]; then
-    mkdir $CVI_DIR
-  fi
-  if [ ! -d $CVI_DIR/usb_gadget ]; then
-    # Enale USB ConfigFS
-    mount none $CVI_DIR -t configfs
-    # Create gadget dev
-    mkdir $CVI_GADGET
-    # Set the VID and PID
-    echo $VID >$CVI_GADGET/idVendor
-    echo $PID >$CVI_GADGET/idProduct
-    # Set the product information string
-    mkdir $CVI_GADGET/strings/0x409
-    echo $MANUFACTURER>$CVI_GADGET/strings/0x409/manufacturer
-    echo $PRODUCT>$CVI_GADGET/strings/0x409/product
-    echo $SERIAL>$CVI_GADGET/strings/0x409/serialnumber
-    # Set the USB configuration
-    mkdir $CVI_GADGET/configs/c.1
-    mkdir $CVI_GADGET/configs/c.1/strings/0x409
-    echo "config1">$CVI_GADGET/configs/c.1/strings/0x409/configuration
-    # Set the MaxPower of USB descriptor
-    echo 120 >$CVI_GADGET/configs/c.1/MaxPower
-  fi
-  # get current functions number
-  calc_func
-  # assign the class code for composite device
-  if [ ! $FUNC_NUM -eq 0 ]; then
-    echo 0xEF >$CVI_GADGET/bDeviceClass
-    echo 0x02 >$CVI_GADGET/bDeviceSubClass
-    echo 0x01 >$CVI_GADGET/bDeviceProtocol
-  fi
-  # resource check
-  res_check
-  # create the desired function
-  if [ "$CLASS" = "ffs.adb" ] ; then
-    # adb shall be the last function to probe. Override the pid/vid
-    echo $VID >$CVI_GADGET/idVendor
-    echo $PID >$CVI_GADGET/idProduct
-    # choose pid for different function number
-    if [ $INTF_NUM -eq 1 ]; then
-      echo $ADB_PID_M1 >$CVI_GADGET/idProduct
-    fi
-    if [ $INTF_NUM -eq 2 ]; then
-      echo $ADB_PID_M2 >$CVI_GADGET/idProduct
-    fi
-    mkdir $CVI_GADGET/functions/$CLASS
-  else
-    mkdir $CVI_GADGET/functions/$CLASS.usb$FUNC_NUM
-  fi
-  if [ "$CLASS" = "mass_storage" ] ; then
-    echo $MSC_FILE >$CVI_GADGET/functions/$CLASS.usb$FUNC_NUM/lun.0/file
-  fi
-  if [ "$CLASS" = "rndis" ] ; then
-    #OS STRING
-    echo 1 >$CVI_GADGET/os_desc/use
-    echo 0xcd >$CVI_GADGET/os_desc/b_vendor_code
-    echo MSFT100 >$CVI_GADGET/os_desc/qw_sign
-    #COMPATIBLE ID
-    echo RNDIS >$CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/compatible_id
-    #MAKE c.1 THE ONE ASSOCIATED WITH OS DESCRIPTORS
-    ln -s $CVI_GADGET/configs/c.1 $CVI_GADGET/os_desc
-    #MAKE "Icons" EXTENDED PROPERTY
-    mkdir $CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/Icons
-    echo 2 >$CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/Icons/type
-    echo "%SystemRoot%\\system32\\shell32.dll,-233" >$CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/Icons/data
-    #MAKE "Label" EXTENDED PROPERTY
-    mkdir $CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/Label
-    echo 1 >$CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/Label/type
-    echo "XYZ Device" >$CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/Label/data
-  fi
-
-}
-
-start() {
-  # link this function to the configuration
-  calc_func
-  if [ $FUNC_NUM -eq 0 ]; then
-    echo "Functions Empty!"
-    exit 1
-  fi
-  if [ -d $CVI_GADGET/functions/ffs.adb ]; then
-    FUNC_NUM=$(($FUNC_NUM-1))
-  fi
-  for i in `seq 0 $(($FUNC_NUM-1))`;
-  do
-    find $CVI_GADGET/functions/ -name "*.usb$i" | xargs -I % ln -s % $CVI_GADGET/configs/c.1
-  done
-  if [ -d $CVI_GADGET/functions/ffs.adb ]; then
-    ln -s $CVI_GADGET/functions/ffs.adb $CVI_GADGET/configs/c.1
-    mkdir /dev/usb-ffs/adb -p
-    mount -t functionfs adb /dev/usb-ffs/adb
-    if [ -f $ADBD_PATH/adbd ]; then
-	$ADBD_PATH/adbd &
-    fi
-  else
-    # Start the gadget driver
-    UDC=`ls /sys/class/udc/ | awk '{print $1}'`
-    echo ${UDC} >$CVI_GADGET/UDC
-  fi
-}
-
-stop() {
-  if [ -d $CVI_GADGET/configs/c.1/ffs.adb ]; then
-    pkill adbd
-    rm $CVI_GADGET/configs/c.1/ffs.adb
-  else
-    echo "" >$CVI_GADGET/UDC
-  fi
-  find $CVI_GADGET/configs/ -name "*.usb*" | xargs rm -f
-  rmdir $CVI_GADGET/configs/c.*/strings/0x409/
-  tmp_dirs=$(find $CVI_GADGET/os_desc/c.* -type d)
-  if [ -n tmp_dirs ]; then
-    echo "remove os_desc!"
-    rm -rf $CVI_GADGET/os_desc/c.*/
-    find $CVI_GADGET/functions/ -name Icons | xargs rmdir
-    find $CVI_GADGET/functions/ -name Label | xargs rmdir
-  fi
-  rmdir $CVI_GADGET/configs/c.*/
-  rmdir $CVI_GADGET/functions/*
-  rmdir $CVI_GADGET/strings/0x409/
-  rmdir $CVI_GADGET
-  umount $CVI_DIR
-  rmdir $CVI_DIR
-}
-
-case "$1" in
-  start)
-	start
-	;;
-  stop)
-	stop
-	;;
-  probe)
-	probe
-	;;
-  UDC)
-	ls /sys/class/udc/ >$CVI_GADGET/UDC
-	;;
-  *)
-	echo "Usage: $0 probe {acm|msc|cvg|uvc|uac1} {file (msc)}"
-	echo "Usage: $0 start"
-	echo "Usage: $0 stop"
-	exit 1
-esac
-exit $?
diff --git a/device/milkv-duo256m/br_overlay/etc/uhubon.sh b/device/milkv-duo256m/br_overlay/etc/uhubon.sh
deleted file mode 100755
index a8256765db..0000000000
--- a/device/milkv-duo256m/br_overlay/etc/uhubon.sh
+++ /dev/null
@@ -1,83 +0,0 @@
-GPIO_HUBPORT_EN=449
-GPIO_ROLESEL=450
-GPIO_HUBRST=451
-SYS_GPIO=/sys/class/gpio
-
-hub_on() {
-  echo "turn on usb hub"
-  if [ ! -d $SYS_GPIO/gpio$GPIO_HUBPORT_EN ]; then
-      echo $GPIO_HUBPORT_EN >/sys/class/gpio/export
-  fi
-
-  if [ ! -d $SYS_GPIO/gpio$GPIO_ROLESEL ]; then
-      echo $GPIO_ROLESEL >/sys/class/gpio/export
-  fi
-
-  if [ ! -d $SYS_GPIO/gpio$GPIO_HUBRST ]; then
-      echo $GPIO_HUBRST >/sys/class/gpio/export
-  fi
-
-  echo "out" >/sys/class/gpio/gpio$GPIO_HUBPORT_EN/direction
-  echo "out" >/sys/class/gpio/gpio$GPIO_ROLESEL/direction
-  echo "out" >/sys/class/gpio/gpio$GPIO_HUBRST/direction
-
-  echo 1 >/sys/class/gpio/gpio$GPIO_HUBPORT_EN/value
-  echo 0 >/sys/class/gpio/gpio$GPIO_ROLESEL/value
-  echo 0 >/sys/class/gpio/gpio$GPIO_HUBRST/value
-}
-
-hub_off() {
-  echo "turn off usb hub"
-  if [ ! -d $SYS_GPIO/gpio$GPIO_HUBPORT_EN ]; then
-      echo $GPIO_HUBPORT_EN >/sys/class/gpio/export
-  fi
-
-  if [ ! -d $SYS_GPIO/gpio$GPIO_ROLESEL ]; then
-      echo $GPIO_ROLESEL >/sys/class/gpio/export
-  fi
-
-  if [ ! -d $SYS_GPIO/gpio$GPIO_HUBRST ]; then
-      echo $GPIO_HUBRST >/sys/class/gpio/export
-  fi
-
-  echo "out" >/sys/class/gpio/gpio$GPIO_HUBPORT_EN/direction
-  echo "out" >/sys/class/gpio/gpio$GPIO_ROLESEL/direction
-  echo "out" >/sys/class/gpio/gpio$GPIO_HUBRST/direction
-
-  echo 0 >/sys/class/gpio/gpio$GPIO_HUBPORT_EN/value
-  echo 1 >/sys/class/gpio/gpio$GPIO_ROLESEL/value
-  echo 1 >/sys/class/gpio/gpio$GPIO_HUBRST/value
-}
-
-inst_mod() {
-  insmod /mnt/system/ko/configfs.ko
-  insmod /mnt/system/ko/libcomposite.ko
-  insmod /mnt/system/ko/u_serial.ko
-  insmod /mnt/system/ko/usb_f_acm.ko
-  insmod /mnt/system/ko/cvi_usb_f_cvg.ko
-  insmod /mnt/system/ko/usb_f_uvc.ko
-  insmod /mnt/system/ko/usb_f_fs.ko
-  insmod /mnt/system/ko/u_audio.ko
-  insmod /mnt/system/ko/usb_f_uac1.ko
-  insmod /mnt/system/ko/usb_f_serial.ko
-  insmod /mnt/system/ko/usb_f_mass_storage.ko
-  insmod /mnt/system/ko/u_ether.ko
-  insmod /mnt/system/ko/usb_f_ecm.ko
-  insmod /mnt/system/ko/usb_f_eem.ko
-  insmod /mnt/system/ko/usb_f_rndis.ko
-}
-
-case "$1" in
-  host)
-	insmod /mnt/system/ko/dwc2.ko
-  echo host > /proc/cviusb/otg_role
-	;;
-  device)
-	echo device > /proc/cviusb/otg_role
-	;;
-  *)
-	echo "Usage: $0 host"
-	echo "Usage: $0 device"
-	exit 1
-esac
-exit $?
diff --git a/device/milkv-duo256m/br_overlay/lib/ld-musl-riscv64v0p7_xthead.so.1 b/device/milkv-duo256m/br_overlay/lib/ld-musl-riscv64v0p7_xthead.so.1
deleted file mode 120000
index 4665bcf84d..0000000000
--- a/device/milkv-duo256m/br_overlay/lib/ld-musl-riscv64v0p7_xthead.so.1
+++ /dev/null
@@ -1 +0,0 @@
-../usr/lib64v0p7_xthead/lp64d/libc.so
\ No newline at end of file
diff --git a/device/milkv-duo256m/br_overlay/usr/lib64v0p7_xthead/lp64d/libc.so b/device/milkv-duo256m/br_overlay/usr/lib64v0p7_xthead/lp64d/libc.so
deleted file mode 100755
index 8a2b8ff7d2..0000000000
Binary files a/device/milkv-duo256m/br_overlay/usr/lib64v0p7_xthead/lp64d/libc.so and /dev/null differ
diff --git a/device/milkv-duo256m/br_overlay/usr/local/bin/autologin b/device/milkv-duo256m/br_overlay/usr/local/bin/autologin
deleted file mode 100755
index 6f12842ec1..0000000000
--- a/device/milkv-duo256m/br_overlay/usr/local/bin/autologin
+++ /dev/null
@@ -1,2 +0,0 @@
-#! /bin/sh
-exec /bin/login -f root
diff --git a/device/milkv-duo256m/overlay/mnt/cfg/param/cvi_sdr_bin b/device/milkv-duo256m/overlay/mnt/cfg/param/cvi_sdr_bin
deleted file mode 120000
index a40ffa9981..0000000000
--- a/device/milkv-duo256m/overlay/mnt/cfg/param/cvi_sdr_bin
+++ /dev/null
@@ -1 +0,0 @@
-cvi_sdr_bin_GC2083
\ No newline at end of file
diff --git a/device/milkv-duo256m/overlay/mnt/cfg/param/cvi_sdr_bin_GC2083 b/device/milkv-duo256m/overlay/mnt/cfg/param/cvi_sdr_bin_GC2083
deleted file mode 100644
index a44ed2d9d3..0000000000
Binary files a/device/milkv-duo256m/overlay/mnt/cfg/param/cvi_sdr_bin_GC2083 and /dev/null differ
diff --git a/device/milkv-duo256m/overlay/mnt/cfg/param/cvi_sdr_bin_SC035HGS b/device/milkv-duo256m/overlay/mnt/cfg/param/cvi_sdr_bin_SC035HGS
deleted file mode 100644
index 37578e5ef8..0000000000
Binary files a/device/milkv-duo256m/overlay/mnt/cfg/param/cvi_sdr_bin_SC035HGS and /dev/null differ
diff --git a/device/milkv-duo256m/overlay/mnt/cvimodel/scrfd_768_432_int8_1x.cvimodel b/device/milkv-duo256m/overlay/mnt/cvimodel/scrfd_768_432_int8_1x.cvimodel
new file mode 100644
index 0000000000..b3672e624d
Binary files /dev/null and b/device/milkv-duo256m/overlay/mnt/cvimodel/scrfd_768_432_int8_1x.cvimodel differ
diff --git a/device/milkv-duo256m/overlay/mnt/data/install/CviIspTool.sh b/device/milkv-duo256m/overlay/mnt/data/install/CviIspTool.sh
deleted file mode 100755
index b33891f85e..0000000000
--- a/device/milkv-duo256m/overlay/mnt/data/install/CviIspTool.sh
+++ /dev/null
@@ -1,107 +0,0 @@
-#!/bin/sh
-
-# Camera I2C init
-#/usr/bin/duo-pinmux -w GP10/IIC1_SDA
-#/usr/bin/duo-pinmux -w GP11/IIC1_SCL
-
-sleep 1
-
-#DEFAULT_HOST="192.168.1.3"
-
-echo 16777216 > /proc/sys/net/core/wmem_max
-echo "4096 873800 16777216" > /proc/sys/net/ipv4/tcp_wmem
-echo "3073344 4097792 16777216" > /proc/sys/net/ipv4/tcp_mem
-
-if [ "$1" == "64M" ]; then
-	CFG_JSON_FILE="./cfg_64M.json"
-elif [ "$1" == "128M" ]; then
-	CFG_JSON_FILE="./cfg_128M.json"
-else
-	echo "Please input size of RAM!"
-	echo "e.g. ./CviIspTool.sh 64M"
-	exit 0
-fi
-
-if [ -z "$CVI_RTSP_JSON" ]; then
-    export CVI_RTSP_JSON=$CFG_JSON_FILE
-fi
-
-getopts_get_optional_argument() {
-    eval next_token=\${$OPTIND}
-    if [[ -n $next_token && $next_token != -* ]]; then
-        OPTIND=$((OPTIND + 1))
-        OPTARG=$next_token
-    else
-        OPTARG=""
-    fi
-}
-
-# $1 is used, $2 shift to $1
-shift
-
-sed -i 's/"dev-num": 2/"dev-num": 1/g' $CFG_JSON_FILE
-while getopts "hgmi" OPTION; do
-    case $OPTION in
-        i)
-            getopts_get_optional_argument $@
-            if [ -z "$OPTARG" ]; then
-                HOST=${DEFAULT_HOST}
-            else
-                HOST=$OPTARG
-            fi
-            echo "set the IP address $HOST to network interface"
-            ;;
-        g)
-            GIGABIT="true"
-            echo "use gigabit ethernet"
-            ;;
-        m)
-            if [ -z "$CVI_RTSP_MODE" ]; then
-                export CVI_RTSP_MODE=1
-            fi
-            echo "use multi rtsp server"
-            sed -i 's/"dev-num": 1/"dev-num": 2/g' $CFG_JSON_FILE
-            ;;
-        h)
-            echo "Usage:"
-            echo "   -i     set the IP address to network interface"
-            echo "   -g     use gigabit ethernet"
-            echo "   -m     use multi rtsp server"
-            echo "   -h     help (this output)"
-            exit 0
-            ;;
-    esac
-done
-
-# disable vcodec debug message to minize latency
-if [ -d "/sys/module/cv181x_vcodec/" ];then
-echo 0x20001 > /sys/module/cv181x_vcodec/parameters/vcodec_mask
-elif [ -d "/sys/module/cv180x_vcodec/" ];then
-echo 0x20001 > /sys/module/cv180x_vcodec/parameters/vcodec_mask
-fi
-# enable remap
-echo 1 > /sys/module/cvi_vc_driver/parameters/addrRemapEn
-echo 256 > /sys/module/cvi_vc_driver/parameters/ARExtraLine
-
-#if [ "$HOST" ]; then
-#    if [ "$GIGABIT" == "true" ]; then
-#        # enable gigabit ethernet (=eth1)
-#        ifconfig eth0 down
-#        ifconfig eth1 up
-#        ifconfig eth1 $HOST netmask 255.255.255.0
-#        #udhcpc -b -i eth1 -R & # unmakr this line to use DHCP
-#    else
-#        ifconfig eth1 down
-#        ifconfig eth0 up
-#        ifconfig eth0 $HOST netmask 255.255.255.0
-#        #udhcpc -b -i eth1 -R & # unmark this line to use DHCP
-#    fi
-#fi
-
-# for eaier debugging, add $PWD to LD_LIBRARY_PATH and PATH
-SCRIPT_SELF=$(cd "$(dirname "$0")"; pwd)
-export LD_LIBRARY_PATH=${SCRIPT_SELF}/lib:${SCRIPT_SELF}/lib/ai:${LD_LIBRARY_PATH}:/mnt/system/usr/lib:/mnt/system/usr/lib/3rd:/lib/3rd
-
-PATH=${SCRIPT_SELF}:/mnt/system/usr/bin:$PATH
-cd ${SCRIPT_SELF}
-isp_tool_daemon
diff --git a/device/milkv-duo256m/overlay/mnt/data/install/cfg_128M.json b/device/milkv-duo256m/overlay/mnt/data/install/cfg_128M.json
deleted file mode 100644
index 008e0d8dd2..0000000000
--- a/device/milkv-duo256m/overlay/mnt/data/install/cfg_128M.json
+++ /dev/null
@@ -1,49 +0,0 @@
-{
-	"//": "-----------------------------------------------------------------------------------------------------------------------------------------------------",
-	"//": "more option please refer https://cvitekcn-my.sharepoint.com/:x:/g/personal/tjyoung_cvitek_com/EavTSnA63CNAl2ZXmKwZnaoBK45WzoKdsrEQ7gwXNxKOpQ?e=l3hgB8",
-	"//": "-----------------------------------------------------------------------------------------------------------------------------------------------------",
-	"//": "compress-mode none,tile,line,frame",
-	"//": "if run AI(face ae) function, make buf1-blk-cnt 4 please!",
-	"//": "we set venc-bind-vpss=1 can cost down vb blk",
-	"//": "bitstream-buf-size can set venc buffer size",
-	"//": "vi-vpss-mode 0.VI_OFFLINE_VPSS_OFFLINE 1.VI_OFFLINE_VPSS_ONLINE",
-	"//": "vi-vpss-mode 2.VI_ONLINE_VPSS_OFFLINE  3.VI_ONLINE_VPSS_ONLINE",
-	"//": "when it is wdr mode or dual sensor, we cant't set VI_ONLINE_VPSS_OFFLINE/VI_ONLINE_VPSS_ONLINE",
-	"//": "devNum decides whether to run oneRtspServer or dualRtspServer",
-	"//": "devNum=1 dualSensor use the same video-src-info chn0 settings",
-	"//": "if run sbm mode, set vi-vpss-mode 1 set venc-bind-vpss true",
-	"dev-num": 1,
-	"rtsp-port": 8554,
-	"buf1-blk-cnt": 0,
-	"vi-vpss-mode": 1,
-	"model": "./cvi_models/retinaface_mnet0.25_342_608.cvimodel",
-	"sbm": 0,
-	"sbm-buf-line": 64,
-	"sbm-buf-size": 16,
-	"video-src-info": [
-		{
-			"chn": 0,
-			"buf-blk-cnt": 2,
-			"venc-bind-vpss": false,
-			"enable-isp-info-osd": false,
-			"enable-retinaface": false,
-			"venc_json": "./vc_param_128M.json",
-			"codec": "265",
-			"gop": 50,
-			"bitrate": 5000,
-			"compress-mode": "tile"
-		},
-		{
-			"chn": 1,
-			"buf-blk-cnt": 5,
-			"venc-bind-vpss": false,
-			"enable-isp-info-osd": false,
-			"enable-retinaface": false,
-			"venc_json": "/mnt/data/vc_param.json",
-			"codec": "265",
-			"gop": 50,
-			"bitrate": 5000,
-			"compress-mode": "tile"
-		}
-	]
-}
diff --git a/device/milkv-duo256m/overlay/mnt/data/install/cfg_64M.json b/device/milkv-duo256m/overlay/mnt/data/install/cfg_64M.json
deleted file mode 100644
index 0ab2e8b525..0000000000
--- a/device/milkv-duo256m/overlay/mnt/data/install/cfg_64M.json
+++ /dev/null
@@ -1,51 +0,0 @@
-{
-	"//": "-----------------------------------------------------------------------------------------------------------------------------------------------------",
-	"//": "more option please refer https://cvitekcn-my.sharepoint.com/:x:/g/personal/tjyoung_cvitek_com/EavTSnA63CNAl2ZXmKwZnaoBK45WzoKdsrEQ7gwXNxKOpQ?e=l3hgB8",
-	"//": "-----------------------------------------------------------------------------------------------------------------------------------------------------",
-	"//": "compress-mode none,tile,line,frame",
-	"//": "if run AI(face ae) function, make buf1-blk-cnt 4 please!",
-	"//": "we set venc-bind-vpss=1 can cost down vb blk",
-	"//": "bitstream-buf-size can set venc buffer size",
-	"//": "vi-vpss-mode 0.VI_OFFLINE_VPSS_OFFLINE 1.VI_OFFLINE_VPSS_ONLINE",
-	"//": "vi-vpss-mode 2.VI_ONLINE_VPSS_OFFLINE  3.VI_ONLINE_VPSS_ONLINE",
-	"//": "when it is wdr mode or dual sensor, we cant't set VI_ONLINE_VPSS_OFFLINE/VI_ONLINE_VPSS_ONLINE",
-	"//": "devNum decides whether to run oneRtspServer or dualRtspServer",
-	"//": "devNum=1 dualSensor use the same video-src-info chn0 settings",
-	"//": "if run sbm mode, set vi-vpss-mode 1 set venc-bind-vpss true",
-	"dev-num": 1,
-	"rtsp-port": 8554,
-	"buf1-blk-cnt": 0,
-	"vi-vpss-mode": 1,
-	"model": "./cvi_models/retinaface_mnet0.25_342_608.cvimodel",
-	"sbm": 0,
-	"sbm-buf-line": 64,
-	"sbm-buf-size": 16,
-	"video-src-info": [
-		{
-			"chn": 0,
-			"buf-blk-cnt": 5,
-			"venc-bind-vpss": false,
-			"enable-isp-info-osd": false,
-			"enable-retinaface": false,
-			"venc_json": "./vc_param_64M.json",
-			"codec": "265",
-			"gop": 50,
-			"bitrate": 2000,
-			"compress-mode": "tile",
-			"rc-mode": 0,
-			"bitstream-buf-size": 524288
-		},
-		{
-			"chn": 1,
-			"buf-blk-cnt": 5,
-			"venc-bind-vpss": false,
-			"enable-isp-info-osd": false,
-			"enable-retinaface": false,
-			"venc_json": "/mnt/data/vc_param.json",
-			"codec": "265",
-			"gop": 50,
-			"bitrate": 5000,
-			"compress-mode": "tile"
-		}
-	]
-}
diff --git a/device/milkv-duo256m/overlay/mnt/data/install/config.ini b/device/milkv-duo256m/overlay/mnt/data/install/config.ini
deleted file mode 100644
index c8f01b558f..0000000000
--- a/device/milkv-duo256m/overlay/mnt/data/install/config.ini
+++ /dev/null
@@ -1,8 +0,0 @@
-[LOG]
-level = 3
-[PQBIN]
-isEnableSetPQBin = 1
-SDR_PQBinName = /mnt/data/bin/cvi_sdr_bin
-WDR_PQBinName = /mnt/data/bin/cvi_wdr_bin
-isEnableSetSnsCfgPath = 1
-SnsCfgPath = ./sensor_cfg.ini
diff --git a/device/milkv-duo256m/overlay/mnt/data/install/cvi_models/retinaface_mnet0.25_342_608.cvimodel b/device/milkv-duo256m/overlay/mnt/data/install/cvi_models/retinaface_mnet0.25_342_608.cvimodel
deleted file mode 100644
index 5d0b18d7d5..0000000000
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diff --git a/device/milkv-duo256m/overlay/mnt/data/install/cvi_models/version b/device/milkv-duo256m/overlay/mnt/data/install/cvi_models/version
deleted file mode 100644
index 5743e6b3d2..0000000000
--- a/device/milkv-duo256m/overlay/mnt/data/install/cvi_models/version
+++ /dev/null
@@ -1,2 +0,0 @@
-[2022-06-13]
-retinaface_mnet0.25_342_608.cvimodel
diff --git a/device/milkv-duo256m/overlay/mnt/data/install/isp_tool_daemon b/device/milkv-duo256m/overlay/mnt/data/install/isp_tool_daemon
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diff --git a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libavcodec.so b/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libavcodec.so
deleted file mode 120000
index a2335869ad..0000000000
--- a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libavcodec.so
+++ /dev/null
@@ -1 +0,0 @@
-libavcodec.so.58.106.100
\ No newline at end of file
diff --git a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libavcodec.so.58 b/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libavcodec.so.58
deleted file mode 120000
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--- a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libavcodec.so.58
+++ /dev/null
@@ -1 +0,0 @@
-libavcodec.so.58.106.100
\ No newline at end of file
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diff --git a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libavformat.so b/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libavformat.so
deleted file mode 120000
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+++ /dev/null
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-libavformat.so.58.58.100
\ No newline at end of file
diff --git a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libavformat.so.58 b/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libavformat.so.58
deleted file mode 120000
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--- a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libavformat.so.58
+++ /dev/null
@@ -1 +0,0 @@
-libavformat.so.58.58.100
\ No newline at end of file
diff --git a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libavformat.so.58.58.100 b/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libavformat.so.58.58.100
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diff --git a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libavutil.so b/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libavutil.so
deleted file mode 120000
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--- a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libavutil.so
+++ /dev/null
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-libavutil.so.56.59.100
\ No newline at end of file
diff --git a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libavutil.so.56 b/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libavutil.so.56
deleted file mode 120000
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--- a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libavutil.so.56
+++ /dev/null
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-libavutil.so.56.59.100
\ No newline at end of file
diff --git a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libavutil.so.56.59.100 b/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libavutil.so.56.59.100
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diff --git a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libcnpy.so b/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libcnpy.so
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deleted file mode 120000
index 88520eab92..0000000000
--- a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libcrypto.so
+++ /dev/null
@@ -1 +0,0 @@
-libcrypto.so.1.1
\ No newline at end of file
diff --git a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libcrypto.so.1.1 b/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libcrypto.so.1.1
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diff --git a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libcvi_json-c.so b/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libcvi_json-c.so
deleted file mode 120000
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--- a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libcvi_json-c.so
+++ /dev/null
@@ -1 +0,0 @@
-libcvi_json-c.so.5
\ No newline at end of file
diff --git a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libcvi_json-c.so.5 b/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libcvi_json-c.so.5
deleted file mode 120000
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--- a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libcvi_json-c.so.5
+++ /dev/null
@@ -1 +0,0 @@
-libcvi_json-c.so.5.1.0
\ No newline at end of file
diff --git a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libcvi_json-c.so.5.1.0 b/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libcvi_json-c.so.5.1.0
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diff --git a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libcviai.so b/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libcviai.so
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deleted file mode 100644
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diff --git a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libcviruntime.so b/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libcviruntime.so
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diff --git a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libjson-c.so b/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libjson-c.so
deleted file mode 120000
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--- a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libjson-c.so
+++ /dev/null
@@ -1 +0,0 @@
-libjson-c.so.5
\ No newline at end of file
diff --git a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libnanomsg.so b/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libnanomsg.so
deleted file mode 120000
index 08c161235e..0000000000
--- a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libnanomsg.so
+++ /dev/null
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-libnanomsg.so.5
\ No newline at end of file
diff --git a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libnanomsg.so.5 b/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libnanomsg.so.5
deleted file mode 120000
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--- a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libnanomsg.so.5
+++ /dev/null
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-libnanomsg.so.5.1.0
\ No newline at end of file
diff --git a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libnanomsg.so.5.1.0 b/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libnanomsg.so.5.1.0
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diff --git a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libopencv_core.so b/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libopencv_core.so
deleted file mode 120000
index 86fcf8b7a3..0000000000
--- a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libopencv_core.so
+++ /dev/null
@@ -1 +0,0 @@
-libopencv_core.so.3.2
\ No newline at end of file
diff --git a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libopencv_core.so.3.2 b/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libopencv_core.so.3.2
deleted file mode 120000
index 945b2f11bf..0000000000
--- a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libopencv_core.so.3.2
+++ /dev/null
@@ -1 +0,0 @@
-libopencv_core.so.3.2.0
\ No newline at end of file
diff --git a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libopencv_imgcodecs.so b/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libopencv_imgcodecs.so
deleted file mode 120000
index ab8cdf6581..0000000000
--- a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libopencv_imgcodecs.so
+++ /dev/null
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-libopencv_imgcodecs.so.3.2
\ No newline at end of file
diff --git a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libopencv_imgcodecs.so.3.2 b/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libopencv_imgcodecs.so.3.2
deleted file mode 120000
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--- a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libopencv_imgcodecs.so.3.2
+++ /dev/null
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-libopencv_imgcodecs.so.3.2.0
\ No newline at end of file
diff --git a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libopencv_imgcodecs.so.3.2.0 b/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libopencv_imgcodecs.so.3.2.0
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diff --git a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libopencv_imgproc.so b/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libopencv_imgproc.so
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-libopencv_imgproc.so.3.2
\ No newline at end of file
diff --git a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libopencv_imgproc.so.3.2 b/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libopencv_imgproc.so.3.2
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+++ /dev/null
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-libopencv_imgproc.so.3.2.0
\ No newline at end of file
diff --git a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libopencv_imgproc.so.3.2.0 b/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libopencv_imgproc.so.3.2.0
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diff --git a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libsqlite3.so b/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libsqlite3.so
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-libsqlite3.so.0.8.6
\ No newline at end of file
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-libsqlite3.so.0.8.6
\ No newline at end of file
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\ No newline at end of file
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-libswresample.so.3.8.100
\ No newline at end of file
diff --git a/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libswresample.so.3 b/device/milkv-duo256m/overlay/mnt/data/install/lib/ai/libswresample.so.3
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\ No newline at end of file
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deleted file mode 100755
index 27b00f7db8..0000000000
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diff --git a/device/milkv-duo256m/overlay/mnt/data/install/pqtool_definition.json b/device/milkv-duo256m/overlay/mnt/data/install/pqtool_definition.json
deleted file mode 100644
index 7cf034c9f0..0000000000
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diff --git a/device/milkv-duo256m/overlay/mnt/data/install/test/empty.json b/device/milkv-duo256m/overlay/mnt/data/install/test/empty.json
deleted file mode 100755
index 0967ef424b..0000000000
--- a/device/milkv-duo256m/overlay/mnt/data/install/test/empty.json
+++ /dev/null
@@ -1 +0,0 @@
-{}
diff --git a/device/milkv-duo256m/overlay/mnt/data/install/test/h264.json b/device/milkv-duo256m/overlay/mnt/data/install/test/h264.json
deleted file mode 100755
index ea84e449c9..0000000000
--- a/device/milkv-duo256m/overlay/mnt/data/install/test/h264.json
+++ /dev/null
@@ -1,5 +0,0 @@
-{
-    "video-src-info": [{
-        "codec": "264"
-    }]
-}
diff --git a/device/milkv-duo256m/overlay/mnt/data/install/test/h265.json b/device/milkv-duo256m/overlay/mnt/data/install/test/h265.json
deleted file mode 100755
index 3671480c3a..0000000000
--- a/device/milkv-duo256m/overlay/mnt/data/install/test/h265.json
+++ /dev/null
@@ -1,5 +0,0 @@
-{
-    "video-src-info": [{
-        "codec": "265"
-    }]
-}
diff --git a/device/milkv-duo256m/overlay/mnt/data/install/test/retinaface.json b/device/milkv-duo256m/overlay/mnt/data/install/test/retinaface.json
deleted file mode 100755
index 52f48330e6..0000000000
--- a/device/milkv-duo256m/overlay/mnt/data/install/test/retinaface.json
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-    "model": "../cvi_models/retinaface_mnet0.25_342_608.cvimodel",
-    "video-src-info": [{
-        "chn": 0,
-        "venc-bind-vpss": false,
-        "enable-retinaface": true
-    }]
-}
diff --git a/device/milkv-duo256m/overlay/mnt/data/install/test/rtsp_client b/device/milkv-duo256m/overlay/mnt/data/install/test/rtsp_client
deleted file mode 100755
index e209455797..0000000000
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diff --git a/device/milkv-duo256m/overlay/mnt/data/install/test/rtsp_server b/device/milkv-duo256m/overlay/mnt/data/install/test/rtsp_server
deleted file mode 100755
index 4a86e9c02f..0000000000
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diff --git a/device/milkv-duo256m/overlay/mnt/data/install/test/test_aisdk_lib b/device/milkv-duo256m/overlay/mnt/data/install/test/test_aisdk_lib
deleted file mode 100755
index cee5772c92..0000000000
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diff --git a/device/milkv-duo256m/overlay/mnt/data/install/test/test_cvi_rtsp.sh b/device/milkv-duo256m/overlay/mnt/data/install/test/test_cvi_rtsp.sh
deleted file mode 100755
index 0805dc580e..0000000000
--- a/device/milkv-duo256m/overlay/mnt/data/install/test/test_cvi_rtsp.sh
+++ /dev/null
@@ -1,62 +0,0 @@
-#!/bin/sh
-
-export LD_LIBRARY_PATH=$(pwd)/../lib:$(pwd)/../aisdk_lib/lib:$LD_LIBRARY_PATH
-
-SILENT=0
-
-usage() {
-    echo "$0 -t [ unittest | ai | all ] [-s]"
-    echo "    -t test item"
-    echo "    -v silent"
-}
-
-while getopts 'st:' c
-do
-  case $c in
-    s) SILENT=1;;
-    t)
-        TYPE=$OPTARG
-        if [ $TYPE != "all" -a $TYPE != "ai" -a $TYPE != "unittest" ]; then
-            usage
-            exit 1
-        fi
-        ;;
-     *)
-        usage
-        exit 1
-  esac
-done
-
-if [ "$TYPE" = "" ]; then
-    usage
-    exit 1
-fi
-
-if [ $TYPE = "unittest" -o $TYPE = "all" ]; then
-    echo "CVI_RTSP UNITTEST TEST"
-    if [ $SILENT = 1 ]; then
-        ./test_unittest > /dev/null 2>&1
-    else
-        ./test_unittest
-    fi
-
-    if [ $? = 0 ]; then
-        echo "TEST-PASS"
-    else
-        echo "TEST-FAIL"
-    fi
-fi
-
-if [ $TYPE = "ai" -o $TYPE = "all" ]; then
-    echo "CVI_RTSP AISDK_LIB TEST"
-    if [ $SILENT = 1 ]; then
-        ./test_aisdk_lib > /dev/null 2>&1
-    else
-        ./test_aisdk_lib
-    fi
-    if [ $? = 0 ]; then
-        echo "TEST-PASS"
-    else
-        echo "TEST-FAIL"
-    fi
-fi
diff --git a/device/milkv-duo256m/overlay/mnt/data/install/test/test_streaming.sh b/device/milkv-duo256m/overlay/mnt/data/install/test/test_streaming.sh
deleted file mode 100755
index 5819b7fa2b..0000000000
--- a/device/milkv-duo256m/overlay/mnt/data/install/test/test_streaming.sh
+++ /dev/null
@@ -1,57 +0,0 @@
-#!/bin/sh
-
-SILENT=0
-export LD_LIBRARY_PATH=$(pwd)/../lib:$LD_LIBRARY_PATH
-
-usage() {
-    echo "$0 -t [ h264 | h265 ] [-s]"
-    echo "    -t test item"
-    echo "    -v silent"
-}
-
-run_rtsp_server() {
-    if [ $SILENT = 1 ]; then
-        timeout 10 ./rtsp_server ${TYPE}.json > /dev/null 2>&1
-    else
-        timeout 10 ./rtsp_server ${TYPE}.json
-    fi
-}
-
-rtsp_client() {
-    if [ $SILENT = 1 ]; then
-        timeout 5 ./rtsp_client rtsp://127.0.0.1/stream0 > /dev/null 2>&1
-    else
-        timeout 5 ./rtsp_client rtsp://127.0.0.1/stream0
-    fi
-    if [ $? = 0 ]; then
-        echo "TEST-PASS"
-    else
-        echo "TEST-FAIL"
-    fi
-}
-
-while getopts 'st:' c
-do
-  case $c in
-    s) SILENT=1;;
-    t)
-        TYPE=$OPTARG
-        if [ $TYPE != "h264" -a $TYPE != "h265" ]; then
-            usage
-            exit 1
-        fi
-        ;;
-     *)
-        usage
-        exit 1
-  esac
-done
-
-if [ "$TYPE" = "" ]; then
-    usage
-    exit 1
-fi
-
-run_rtsp_server &
-sleep 2
-rtsp_client
diff --git a/device/milkv-duo256m/overlay/mnt/data/install/test/test_unittest b/device/milkv-duo256m/overlay/mnt/data/install/test/test_unittest
deleted file mode 100755
index 2f2cf9431b..0000000000
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diff --git a/device/milkv-duo256m/overlay/mnt/data/install/vc_param_128M.json b/device/milkv-duo256m/overlay/mnt/data/install/vc_param_128M.json
deleted file mode 100644
index 1974825e53..0000000000
--- a/device/milkv-duo256m/overlay/mnt/data/install/vc_param_128M.json
+++ /dev/null
@@ -1,284 +0,0 @@
-{
-    "Coding Param": {
-        "items": [
-            {
-                "key": "FrmLostOpen",
-                "optype": "Manual",
-                "value": 0,
-                "value_type": "int"
-            },
-            {
-                "key": "LostMode",
-                "optype": "Manual",
-                "value": 1,
-                "value_type": "int"
-            },
-            {
-                "key": "FrmLostBpsThr",
-                "optype": "Manual",
-                "value": 0,
-                "value_type": "int"
-            },
-            {
-                "key": "EncFrmGaps",
-                "optype": "Manual",
-                "value": 0,
-                "value_type": "int"
-            },
-            {
-                "key": "IntraCost",
-                "optype": "Manual",
-                "value": 0,
-                "value_type": "int"
-            },
-            {
-                "key": "aspectRatioInfoPresentFlag",
-                "optype": "Manual",
-                "value": 0,
-                "value_type": "int"
-            },
-            {
-                "key": "overscanInfoPresentFlag",
-                "optype": "Manual",
-                "value": 0,
-                "value_type": "int"
-            },
-            {
-                "key": "videoSignalTypePresentFlag",
-                "optype": "Manual",
-                "value": 1,
-                "value_type": "int"
-            },
-            {
-                "key": "videoFormat",
-                "optype": "Manual",
-                "value": 5,
-                "value_type": "int"
-            },
-            {
-                "key": "videoFullRangeFlag",
-                "optype": "Manual",
-                "value": 1,
-                "value_type": "int"
-            },
-            {
-                "key": "colourDescriptionPresentFlag",
-                "optype": "Manual",
-                "value": 0,
-                "value_type": "int"
-            },
-           {
-                "key": "ChromaQpOffset",
-                "optype": "Manual",
-                "value": -6,
-                "value_type": "int"
-            },
-            {
-                "key": "CbQpOffset",
-                "optype": "Manual",
-                "value": -6,
-                "value_type": "int"
-            },
-            {
-                "key": "CrQpOffset",
-                "optype": "Manual",
-                "value": -6,
-                "value_type": "int"
-            }
-        ],
-        "module": "Coding Param",
-        "optype": "Manual"
-    },
-    "Gop Mode": {
-        "items": [
-            {
-                "key": "GopMode",
-                "optype": "Manual",
-                "value": 0,
-                "value_type": "int"
-            },
-            {
-                "key": "IPQpDelta",
-                "optype": "Manual",
-                "value": 2,
-                "value_type": "int"
-            },
-            {
-                "key": "BgInterval",
-                "optype": "Manual",
-                "value": 250,
-                "value_type": "int"
-            },
-            {
-                "key": "BgQpDelta",
-                "optype": "Manual",
-                "value": 0,
-                "value_type": "int"
-            },
-            {
-                "key": "ViQpDelta",
-                "optype": "Manual",
-                "value": 0,
-                "value_type": "int"
-            }
-        ],
-        "module": "Gop Mode",
-        "optype": "Manual"
-    },
-    "RC Attr": {
-        "items": [
-            {
-                "key": "RcMode",
-                "optype": "Manual",
-                "value": 0,
-                "value_type": "int"
-            },
-            {
-                "key": "Gop",
-                "optype": "Manual",
-                "value": 50,
-                "value_type": "int"
-            },
-            {
-                "key": "VariableFPS",
-                "optype": "Manual",
-                "value": 0,
-                "value_type": "int"
-            },
-            {
-                "key": "SrcFrmRate",
-                "optype": "Manual",
-                "value": 25,
-                "value_type": "int"
-            },
-            {
-                "key": "DstFrmRate",
-                "optype": "Manual",
-                "value": 25,
-                "value_type": "int"
-            },
-            {
-                "key": "StatTime",
-                "optype": "Manual",
-                "value": 2,
-                "value_type": "int"
-            },
-            {
-                "key": "BitRate",
-                "optype": "Manual",
-                "value": 4096,
-                "value_type": "int"
-            },
-            {
-                "key": "MaxBitrate",
-                "optype": "Manual",
-                "value": 2000,
-                "value_type": "int"
-            },
-            {
-                "key": "IQP",
-                "optype": "Manual",
-                "value": 38,
-                "value_type": "int"
-            },
-            {
-                "key": "PQP",
-                "optype": "Manual",
-                "value": 38,
-                "value_type": "int"
-            }
-        ],
-        "module": "RC Attr",
-        "optype": "Manual"
-    },
-    "RC Param": {
-        "items": [
-            {
-                "key": "ThrdLv",
-                "optype": "Manual",
-                "value": 2,
-                "value_type": "int"
-            },
-            {
-                "key": "FirstFrameStartQp",
-                "optype": "Manual",
-                "value": 32,
-                "value_type": "int"
-            },
-            {
-                "key": "InitialDelay",
-                "optype": "Manual",
-                "value": 1000,
-                "value_type": "int"
-            },
-            {
-                "key": "MaxQp",
-                "optype": "Manual",
-                "value": 51,
-                "value_type": "int"
-            },
-            {
-                "key": "MinQp",
-                "optype": "Manual",
-                "value": 20,
-                "value_type": "int"
-            },
-            {
-                "key": "MaxIQp",
-                "optype": "Manual",
-                "value": 51,
-                "value_type": "int"
-            },
-            {
-                "key": "MinIQp",
-                "optype": "Manual",
-                "value": 20,
-                "value_type": "int"
-            },
-            {
-                "key": "ChangePos",
-                "optype": "Manual",
-                "value": 90,
-                "value_type": "int"
-            },
-            {
-                "key": "MinStillPercent",
-                "optype": "Manual",
-                "value": 10,
-                "value_type": "int"
-            },
-            {
-                "key": "MaxStillQP",
-                "optype": "Manual",
-                "value": 31,
-                "value_type": "int"
-            },
-            {
-                "key": "MotionSensitivity",
-                "optype": "Manual",
-                "value": 24,
-                "value_type": "int"
-            },
-            {
-                "key": "PureStillThr",
-                "optype": "Manual",
-                "value": 4,
-                "value_type": "int"
-            },
-            {
-                "key": "AvbrFrmLostOpen",
-                "optype": "Manual",
-                "value": 0,
-                "value_type": "int"
-            },
-            {
-                "key": "AvbrFrmGap",
-                "optype": "Manual",
-                "value": 1,
-                "value_type": "int"
-            }
-        ],
-        "module": "RC Param",
-        "optype": "Manual"
-    }
-}
diff --git a/device/milkv-duo256m/overlay/mnt/data/install/vc_param_64M.json b/device/milkv-duo256m/overlay/mnt/data/install/vc_param_64M.json
deleted file mode 100644
index 4854470184..0000000000
--- a/device/milkv-duo256m/overlay/mnt/data/install/vc_param_64M.json
+++ /dev/null
@@ -1,236 +0,0 @@
-{
-    "Coding Param": {
-        "items": [
-            {
-                "key": "FrmLostOpen",
-                "optype": "Manual",
-                "value": 0,
-                "value_type": "int"
-            },
-            {
-                "key": "LostMode",
-                "optype": "Manual",
-                "value": 1,
-                "value_type": "int"
-            },
-            {
-                "key": "FrmLostBpsThr",
-                "optype": "Manual",
-                "value": 0,
-                "value_type": "int"
-            },
-            {
-                "key": "EncFrmGaps",
-                "optype": "Manual",
-                "value": 0,
-                "value_type": "int"
-            },
-            {
-                "key": "IntraCost",
-                "optype": "Manual",
-                "value": 0,
-                "value_type": "int"
-            }
-        ],
-        "module": "Coding Param",
-        "optype": "Manual"
-    },
-    "Gop Mode": {
-        "items": [
-            {
-                "key": "GopMode",
-                "optype": "Manual",
-                "value": 0,
-                "value_type": "int"
-            },
-            {
-                "key": "IPQpDelta",
-                "optype": "Manual",
-                "value": 2,
-                "value_type": "int"
-            },
-            {
-                "key": "BgInterval",
-                "optype": "Manual",
-                "value": 250,
-                "value_type": "int"
-            },
-            {
-                "key": "BgQpDelta",
-                "optype": "Manual",
-                "value": 0,
-                "value_type": "int"
-            },
-            {
-                "key": "ViQpDelta",
-                "optype": "Manual",
-                "value": 0,
-                "value_type": "int"
-            }
-        ],
-        "module": "Gop Mode",
-        "optype": "Manual"
-    },
-    "RC Attr": {
-        "items": [
-            {
-                "key": "RcMode",
-                "optype": "Manual",
-                "value": 0,
-                "value_type": "int"
-            },
-            {
-                "key": "Gop",
-                "optype": "Manual",
-                "value": 50,
-                "value_type": "int"
-            },
-            {
-                "key": "VariableFPS",
-                "optype": "Manual",
-                "value": 1,
-                "value_type": "int"
-            },
-            {
-                "key": "SrcFrmRate",
-                "optype": "Manual",
-                "value": 25,
-                "value_type": "int"
-            },
-            {
-                "key": "DstFrmRate",
-                "optype": "Manual",
-                "value": 25,
-                "value_type": "int"
-            },
-            {
-                "key": "StatTime",
-                "optype": "Manual",
-                "value": 2,
-                "value_type": "int"
-            },
-            {
-                "key": "BitRate",
-                "optype": "Manual",
-                "value": 1000,
-                "value_type": "int"
-            },
-            {
-                "key": "MaxBitrate",
-                "optype": "Manual",
-                "value": 8192,
-                "value_type": "int"
-            },
-            {
-                "key": "IQP",
-                "optype": "Manual",
-                "value": 38,
-                "value_type": "int"
-            },
-            {
-                "key": "PQP",
-                "optype": "Manual",
-                "value": 38,
-                "value_type": "int"
-            }
-        ],
-        "module": "RC Attr",
-        "optype": "Manual"
-    },
-    "RC Param": {
-        "items": [
-            {
-                "key": "ThrdLv",
-                "optype": "Manual",
-                "value": 2,
-                "value_type": "int"
-            },
-            {
-                "key": "FirstFrameStartQp",
-                "optype": "Manual",
-                "value": 34,
-                "value_type": "int"
-            },
-            {
-                "key": "InitialDelay",
-                "optype": "Manual",
-                "value": 1000,
-                "value_type": "int"
-            },
-            {
-                "key": "MaxQp",
-                "optype": "Manual",
-                "value": 51,
-                "value_type": "int"
-            },
-            {
-                "key": "MinQp",
-                "optype": "Manual",
-                "value": 20,
-                "value_type": "int"
-            },
-            {
-                "key": "MaxIprop",
-                "optype": "Manual",
-                "value": 10,
-                "value_type": "int"
-            },
-            {
-                "key": "MaxIQp",
-                "optype": "Manual",
-                "value": 51,
-                "value_type": "int"
-            },
-            {
-                "key": "MinIQp",
-                "optype": "Manual",
-                "value": 20,
-                "value_type": "int"
-            },
-            {
-                "key": "ChangePos",
-                "optype": "Manual",
-                "value": 90,
-                "value_type": "int"
-            },
-            {
-                "key": "MinStillPercent",
-                "optype": "Manual",
-                "value": 20,
-                "value_type": "int"
-            },
-            {
-                "key": "MaxStillQP",
-                "optype": "Manual",
-                "value": 38,
-                "value_type": "int"
-            },
-            {
-                "key": "MotionSensitivity",
-                "optype": "Manual",
-                "value": 24,
-                "value_type": "int"
-            },
-            {
-                "key": "PureStillThr",
-                "optype": "Manual",
-                "value": 4,
-                "value_type": "int"
-            },
-            {
-                "key": "AvbrFrmLostOpen",
-                "optype": "Manual",
-                "value": 0,
-                "value_type": "int"
-            },
-            {
-                "key": "AvbrFrmGap",
-                "optype": "Manual",
-                "value": 1,
-                "value_type": "int"
-            }
-        ],
-        "module": "RC Param",
-        "optype": "Manual"
-    }
-}
\ No newline at end of file
diff --git a/device/milkv-duo256m/overlay/mnt/data/sensor_cfg_OV5647.ini b/device/milkv-duo256m/overlay/mnt/data/sensor_cfg_OV5647.ini
new file mode 100644
index 0000000000..7b4d4e8495
--- /dev/null
+++ b/device/milkv-duo256m/overlay/mnt/data/sensor_cfg_OV5647.ini
@@ -0,0 +1,14 @@
+;section for source
+[source]
+;type = SOURCE_USER_FE
+dev_num = 1
+;section for sensor
+[sensor] 
+;sensor name 
+name = OV_OV5647_MIPI_2M_30FPS_10BIT
+;bus/i2c dev number
+bus_id = 2
+sns_i2c_addr = 36
+mipi_dev = 0
+lane_id = 1, 0, 2, -1, -1
+pn_swap = 0, 0, 0,  0,  0
diff --git a/device/milkv-duo256m/overlay/mnt/data/sensor_cfg_SC035HGS.ini b/device/milkv-duo256m/overlay/mnt/data/sensor_cfg_SC035HGS.ini
new file mode 100644
index 0000000000..0b60d9cb1f
--- /dev/null
+++ b/device/milkv-duo256m/overlay/mnt/data/sensor_cfg_SC035HGS.ini
@@ -0,0 +1,14 @@
+;section for source
+[source]
+;type = SOURCE_USER_FE
+dev_num = 1
+;section for sensor
+[sensor] 
+;sensor name 
+name = SMS_SC035HGS_MIPI_480P_120FPS_12BIT
+;bus/i2c dev number
+bus_id = 2
+sns_i2c_addr = 30
+mipi_dev = 0
+lane_id = 1, 0, 2, -1, -1
+pn_swap = 0, 0, 0, 0, 0
diff --git a/device/milkv-duo256m/overlay/mnt/data/sensor_cfg_default.ini b/device/milkv-duo256m/overlay/mnt/data/sensor_cfg_SC200AI.ini
similarity index 100%
rename from device/milkv-duo256m/overlay/mnt/data/sensor_cfg_default.ini
rename to device/milkv-duo256m/overlay/mnt/data/sensor_cfg_SC200AI.ini
diff --git a/device/milkv-duo256m/overlay/usr/share/fw_vcodec/coda980.bin b/device/milkv-duo256m/overlay/usr/share/fw_vcodec/coda980.bin
deleted file mode 100755
index 47240d8574..0000000000
Binary files a/device/milkv-duo256m/overlay/usr/share/fw_vcodec/coda980.bin and /dev/null differ
diff --git a/device/milkv-duo256m/overlay/usr/share/fw_vcodec/monet.bin b/device/milkv-duo256m/overlay/usr/share/fw_vcodec/monet.bin
deleted file mode 100755
index dd4d799731..0000000000
Binary files a/device/milkv-duo256m/overlay/usr/share/fw_vcodec/monet.bin and /dev/null differ
diff --git a/device/milkv-duos-emmc/br_overlay/.gitignore b/device/milkv-duos-emmc/br_overlay/.gitignore
deleted file mode 100644
index d574568a70..0000000000
--- a/device/milkv-duos-emmc/br_overlay/.gitignore
+++ /dev/null
@@ -1,5 +0,0 @@
-mnt/system/
-mnt/cfg/
-mnt/data/
-usr/bin
-usr/share
diff --git a/device/milkv-duos-emmc/br_overlay/etc/dnsmasq.conf b/device/milkv-duos-emmc/br_overlay/etc/dnsmasq.conf
deleted file mode 100644
index fcdb620ffa..0000000000
--- a/device/milkv-duos-emmc/br_overlay/etc/dnsmasq.conf
+++ /dev/null
@@ -1,4 +0,0 @@
-interface=usb0
-dhcp-range=192.168.42.2,192.168.42.242,1h
-dhcp-option=3
-dhcp-option=6
diff --git a/device/milkv-duos-emmc/br_overlay/etc/init.d/S99user b/device/milkv-duos-emmc/br_overlay/etc/init.d/S99user
deleted file mode 100755
index 32b5248454..0000000000
--- a/device/milkv-duos-emmc/br_overlay/etc/init.d/S99user
+++ /dev/null
@@ -1,50 +0,0 @@
-#!/bin/sh
-${CVI_SHOPTS}
-#
-# Start firmware
-#
-export USERDATAPATH=/mnt/data/
-export SYSTEMPATH=/mnt/system/
-
-case "$1" in
-  start)
-        echo "init mpp system..."
-        if [ -d $SYSTEMPATH/ko ]; then
-                sh $SYSTEMPATH/ko/loadsystemko.sh
-        fi
-
-        echo "Starting app..."
-
-        if [ -f $SYSTEMPATH/duo-init.sh ]; then
-                . $SYSTEMPATH/duo-init.sh &
-        fi
-
-        if [ -f $SYSTEMPATH/blink.sh ]; then
-                . $SYSTEMPATH/blink.sh &
-        fi
-
-	if [ -f $SYSTEMPATH/usb.sh ]; then
-                . $SYSTEMPATH/usb.sh &
-        fi
-
-        if [ -f $USERDATAPATH/auto.sh ]; then
-                usleep 30000
-                . $USERDATAPATH/auto.sh &
-		exit 1
-        fi
-	if [ -f $SYSTEMPATH/auto.sh ]; then
-                usleep 30000
-                . $SYSTEMPATH/auto.sh &
-        fi
-        ;;
-  stop)
-        ;;
-  restart|reload)
-        ;;
-  *)
-        echo "Usage: $0 {start|stop|restart}"
-        exit 1
-esac
-
-exit $?
-
diff --git a/device/milkv-duos-emmc/br_overlay/etc/inittab b/device/milkv-duos-emmc/br_overlay/etc/inittab
deleted file mode 100644
index 2c9793ce9a..0000000000
--- a/device/milkv-duos-emmc/br_overlay/etc/inittab
+++ /dev/null
@@ -1,40 +0,0 @@
-# /etc/inittab
-#
-# Copyright (C) 2001 Erik Andersen <andersen@codepoet.org>
-#
-# Note: BusyBox init doesn't support runlevels.  The runlevels field is
-# completely ignored by BusyBox init. If you want runlevels, use
-# sysvinit.
-#
-# Format for each entry: <id>:<runlevels>:<action>:<process>
-#
-# id        == tty to run on, or empty for /dev/console
-# runlevels == ignored
-# action    == one of sysinit, respawn, askfirst, wait, and once
-# process   == program to run
-
-# Startup the system
-::sysinit:/bin/mount -t proc proc /proc
-::sysinit:/bin/mount -o remount,rw /
-::sysinit:/bin/mkdir -p /dev/pts /dev/shm
-::sysinit:/bin/mount -a
-::sysinit:/sbin/swapon -a
-null::sysinit:/bin/ln -sf /proc/self/fd /dev/fd
-null::sysinit:/bin/ln -sf /proc/self/fd/0 /dev/stdin
-null::sysinit:/bin/ln -sf /proc/self/fd/1 /dev/stdout
-null::sysinit:/bin/ln -sf /proc/self/fd/2 /dev/stderr
-::sysinit:/bin/hostname -F /etc/hostname
-# now run any rc scripts
-::sysinit:/etc/init.d/rcS
-
-# Put a getty on the serial port
-# console::respawn:/sbin/getty -L  console 0 vt100 # GENERIC_SERIAL
-console::respawn:/sbin/getty -L  console 115200 vt100 -n -l /usr/local/bin/autologin
-
-# Stuff to do for the 3-finger salute
-#::ctrlaltdel:/sbin/reboot
-
-# Stuff to do before rebooting
-::shutdown:/etc/init.d/rcK
-::shutdown:/sbin/swapoff -a
-::shutdown:/bin/umount -a -r
diff --git a/device/milkv-duos-emmc/br_overlay/etc/profile b/device/milkv-duos-emmc/br_overlay/etc/profile
deleted file mode 100644
index d99b378634..0000000000
--- a/device/milkv-duos-emmc/br_overlay/etc/profile
+++ /dev/null
@@ -1,37 +0,0 @@
-export PATH="/bin:/sbin:/usr/bin:/usr/sbin"
-export PATH="/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin:/mnt/system/usr/bin:/mnt/system/usr/sbin:/mnt/data/bin:/mnt/data/sbin"
-
-if [ "$PS1" ]; then
-	if [ "`id -u`" -eq 0 ]; then
-		export PS1='# '
-	else
-		export PS1='$ '
-	fi
-fi
-
-export PAGER='/bin/more '
-export EDITOR='/bin/vi'
-
-# Source configuration files from /etc/profile.d
-for i in /etc/profile.d/*.sh ; do
-	if [ -r "$i" ]; then
-		. $i
-	fi
-	unset i
-done
-
-export HOSTNAME="$(hostname)"
-export OLDPWD=/root
-
-if [ '$USER' == 'root' ]; then
-    export PS1='[\u@\h]\w\# '
-else
-    export PS1='[\u@\h]\w\$ '
-fi
-
-alias ll='ls -alF'
-alias la='ls -A'
-alias l='ls -CF'
-
-export TERM=vt100
-export TERMINFO=/usr/share/terminfo
diff --git a/device/milkv-duos-emmc/br_overlay/etc/run_usb.sh b/device/milkv-duos-emmc/br_overlay/etc/run_usb.sh
deleted file mode 100755
index 760c702845..0000000000
--- a/device/milkv-duos-emmc/br_overlay/etc/run_usb.sh
+++ /dev/null
@@ -1,292 +0,0 @@
-CLASS=acm
-VID=0x3346
-PID=0x1003
-MSC_PID=0x1008
-RNDIS_PID=0x1009
-UVC_PID=0x100A
-UAC_PID=0x100B
-ADB_VID=0x18D1
-ADB_PID=0x4EE0
-ADB_PID_M1=0x4EE2
-ADB_PID_M2=0x4EE4
-MANUFACTURER="Cvitek"
-PRODUCT="USB Com Port"
-PRODUCT_RNDIS="RNDIS"
-PRODUCT_UVC="UVC"
-PRODUCT_UAC="UAC"
-PRODUCT_ADB="ADB"
-ADBD_PATH=/usr/bin/
-SERIAL="0123456789"
-MSC_FILE=$3
-CVI_DIR=/tmp/usb
-CVI_GADGET=$CVI_DIR/usb_gadget/cvitek
-CVI_FUNC=$CVI_GADGET/functions
-FUNC_NUM=0
-MAX_EP_NUM=4
-TMP_NUM=0
-INTF_NUM=0
-EP_IN=0
-EP_OUT=0
-
-case "$2" in
-  acm)
-	CLASS=acm
-	;;
-  msc)
-	CLASS=mass_storage
-	PID=$MSC_PID
-	;;
-  cvg)
-	CLASS=cvg
-	;;
-  rndis)
-	CLASS=rndis
-	PID=$RNDIS_PID
-	PRODUCT=$PRODUCT_RNDIS
-	;;
-  uvc)
-	CLASS=uvc
-	PID=$UVC_PID
-	PRODUCT=$PRODUCT_UVC
-	;;
-  uac1)
-	CLASS=uac1
-	PID=$UAC_PID
-	PRODUCT=$PRODUCT_UAC
-	;;
-  adb)
-	CLASS=ffs.adb
-	VID=$ADB_VID
-	PID=$ADB_PID
-	PRODUCT=$PRODUCT_ADB
-	;;
-  *)
-	if [ "$1" = "probe" ] ; then
-	  echo "Usage: $0 probe {acm|msc|cvg|rndis|uvc|uac1|adb}"
-	  exit 1
-	fi
-esac
-
-calc_func() {
-  FUNC_NUM=$(ls $CVI_GADGET/functions -l | grep ^d | wc -l)
-  echo "$FUNC_NUM file(s)"
-}
-
-res_check() {
-  TMP_NUM=$(find $CVI_GADGET/functions/ -name "acm*" | wc -l)
-  EP_OUT=$(($EP_OUT+$TMP_NUM))
-  TMP_NUM=$(($TMP_NUM * 2))
-  EP_IN=$(($EP_IN+$TMP_NUM))
-  INTF_NUM=$(($INTF_NUM+$TMP_NUM))
-  TMP_NUM=$(find $CVI_GADGET/functions/ -name "mass_storage*" | wc -l)
-  EP_IN=$(($EP_IN+$TMP_NUM))
-  EP_OUT=$(($EP_OUT+$TMP_NUM))
-  INTF_NUM=$(($INTF_NUM+$TMP_NUM))
-  TMP_NUM=$(find $CVI_GADGET/functions/ -name "cvg*" | wc -l)
-  EP_IN=$(($EP_IN+$TMP_NUM))
-  EP_OUT=$(($EP_OUT+$TMP_NUM))
-  INTF_NUM=$(($INTF_NUM+$TMP_NUM))
-  TMP_NUM=$(find $CVI_GADGET/functions/ -name "rndis*" | wc -l)
-  EP_OUT=$(($EP_OUT+$TMP_NUM))
-  TMP_NUM=$(($TMP_NUM * 2))
-  EP_IN=$(($EP_IN+$TMP_NUM))
-  INTF_NUM=$(($INTF_NUM+$TMP_NUM))
-  TMP_NUM=$(find $CVI_GADGET/functions/ -name "uvc*" | wc -l)
-  TMP_NUM=$(($TMP_NUM * 2))
-  EP_IN=$(($EP_IN+$TMP_NUM))
-  INTF_NUM=$(($INTF_NUM+$TMP_NUM))
-  TMP_NUM=$(find $CVI_GADGET/functions/ -name "uac1*" | wc -l)
-  TMP_NUM=$(($TMP_NUM * 2))
-  EP_IN=$(($EP_IN+$TMP_NUM))
-  EP_OUT=$(($EP_OUT+$TMP_NUM))
-  INTF_NUM=$(($INTF_NUM+$TMP_NUM))
-  TMP_NUM=$(find $CVI_GADGET/functions/ -name ffs.adb | wc -l)
-  EP_IN=$(($EP_IN+$TMP_NUM))
-  EP_OUT=$(($EP_OUT+$TMP_NUM))
-  INTF_NUM=$(($INTF_NUM+$TMP_NUM))
-
-  if [ "$CLASS" = "acm" ] ; then
-    EP_IN=$(($EP_IN+2))
-    EP_OUT=$(($EP_OUT+1))
-  fi
-  if [ "$CLASS" = "mass_storage" ] ; then
-    EP_IN=$(($EP_IN+1))
-    EP_OUT=$(($EP_OUT+1))
-  fi
-  if [ "$CLASS" = "cvg" ] ; then
-    EP_IN=$(($EP_IN+1))
-    EP_OUT=$(($EP_OUT+1))
-  fi
-  if [ "$CLASS" = "rndis" ] ; then
-    EP_IN=$(($EP_IN+2))
-    EP_OUT=$(($EP_OUT+1))
-  fi
-  if [ "$CLASS" = "uvc" ] ; then
-    EP_IN=$(($EP_IN+2))
-  fi
-  if [ "$CLASS" = "uac1" ] ; then
-    EP_IN=$(($EP_IN+1))
-    EP_OUT=$(($EP_OUT+1))
-  fi
-  if [ "$CLASS" = "ffs.adb" ] ; then
-    EP_IN=$(($EP_IN+1))
-    EP_OUT=$(($EP_OUT+1))
-  fi
-  echo "$EP_IN in ep"
-  echo "$EP_OUT out ep"
-  if [ $EP_IN -gt $MAX_EP_NUM ]; then
-    echo "reach maximum resource"
-    exit 1
-  fi
-  if [ $EP_OUT -gt $MAX_EP_NUM ]; then
-    echo "reach maximum resource"
-    exit 1
-  fi
-}
-
-probe() {
-  if [ ! -d $CVI_DIR ]; then
-    mkdir $CVI_DIR
-  fi
-  if [ ! -d $CVI_DIR/usb_gadget ]; then
-    # Enale USB ConfigFS
-    mount none $CVI_DIR -t configfs
-    # Create gadget dev
-    mkdir $CVI_GADGET
-    # Set the VID and PID
-    echo $VID >$CVI_GADGET/idVendor
-    echo $PID >$CVI_GADGET/idProduct
-    # Set the product information string
-    mkdir $CVI_GADGET/strings/0x409
-    echo $MANUFACTURER>$CVI_GADGET/strings/0x409/manufacturer
-    echo $PRODUCT>$CVI_GADGET/strings/0x409/product
-    echo $SERIAL>$CVI_GADGET/strings/0x409/serialnumber
-    # Set the USB configuration
-    mkdir $CVI_GADGET/configs/c.1
-    mkdir $CVI_GADGET/configs/c.1/strings/0x409
-    echo "config1">$CVI_GADGET/configs/c.1/strings/0x409/configuration
-    # Set the MaxPower of USB descriptor
-    echo 120 >$CVI_GADGET/configs/c.1/MaxPower
-  fi
-  # get current functions number
-  calc_func
-  # assign the class code for composite device
-  if [ ! $FUNC_NUM -eq 0 ]; then
-    echo 0xEF >$CVI_GADGET/bDeviceClass
-    echo 0x02 >$CVI_GADGET/bDeviceSubClass
-    echo 0x01 >$CVI_GADGET/bDeviceProtocol
-  fi
-  # resource check
-  res_check
-  # create the desired function
-  if [ "$CLASS" = "ffs.adb" ] ; then
-    # adb shall be the last function to probe. Override the pid/vid
-    echo $VID >$CVI_GADGET/idVendor
-    echo $PID >$CVI_GADGET/idProduct
-    # choose pid for different function number
-    if [ $INTF_NUM -eq 1 ]; then
-      echo $ADB_PID_M1 >$CVI_GADGET/idProduct
-    fi
-    if [ $INTF_NUM -eq 2 ]; then
-      echo $ADB_PID_M2 >$CVI_GADGET/idProduct
-    fi
-    mkdir $CVI_GADGET/functions/$CLASS
-  else
-    mkdir $CVI_GADGET/functions/$CLASS.usb$FUNC_NUM
-  fi
-  if [ "$CLASS" = "mass_storage" ] ; then
-    echo $MSC_FILE >$CVI_GADGET/functions/$CLASS.usb$FUNC_NUM/lun.0/file
-  fi
-  if [ "$CLASS" = "rndis" ] ; then
-    #OS STRING
-    echo 1 >$CVI_GADGET/os_desc/use
-    echo 0xcd >$CVI_GADGET/os_desc/b_vendor_code
-    echo MSFT100 >$CVI_GADGET/os_desc/qw_sign
-    #COMPATIBLE ID
-    echo RNDIS >$CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/compatible_id
-    #MAKE c.1 THE ONE ASSOCIATED WITH OS DESCRIPTORS
-    ln -s $CVI_GADGET/configs/c.1 $CVI_GADGET/os_desc
-    #MAKE "Icons" EXTENDED PROPERTY
-    mkdir $CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/Icons
-    echo 2 >$CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/Icons/type
-    echo "%SystemRoot%\\system32\\shell32.dll,-233" >$CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/Icons/data
-    #MAKE "Label" EXTENDED PROPERTY
-    mkdir $CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/Label
-    echo 1 >$CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/Label/type
-    echo "XYZ Device" >$CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/Label/data
-  fi
-
-}
-
-start() {
-  # link this function to the configuration
-  calc_func
-  if [ $FUNC_NUM -eq 0 ]; then
-    echo "Functions Empty!"
-    exit 1
-  fi
-  if [ -d $CVI_GADGET/functions/ffs.adb ]; then
-    FUNC_NUM=$(($FUNC_NUM-1))
-  fi
-  for i in `seq 0 $(($FUNC_NUM-1))`;
-  do
-    find $CVI_GADGET/functions/ -name "*.usb$i" | xargs -I % ln -s % $CVI_GADGET/configs/c.1
-  done
-  if [ -d $CVI_GADGET/functions/ffs.adb ]; then
-    ln -s $CVI_GADGET/functions/ffs.adb $CVI_GADGET/configs/c.1
-    mkdir /dev/usb-ffs/adb -p
-    mount -t functionfs adb /dev/usb-ffs/adb
-    if [ -f $ADBD_PATH/adbd ]; then
-	$ADBD_PATH/adbd &
-    fi
-  else
-    # Start the gadget driver
-    UDC=`ls /sys/class/udc/ | awk '{print $1}'`
-    echo ${UDC} >$CVI_GADGET/UDC
-  fi
-}
-
-stop() {
-  if [ -d $CVI_GADGET/configs/c.1/ffs.adb ]; then
-    pkill adbd
-    rm $CVI_GADGET/configs/c.1/ffs.adb
-  else
-    echo "" >$CVI_GADGET/UDC
-  fi
-  find $CVI_GADGET/configs/ -name "*.usb*" | xargs rm -f
-  rmdir $CVI_GADGET/configs/c.*/strings/0x409/
-  tmp_dirs=$(find $CVI_GADGET/os_desc/c.* -type d)
-  if [ -n tmp_dirs ]; then
-    echo "remove os_desc!"
-    rm -rf $CVI_GADGET/os_desc/c.*/
-    find $CVI_GADGET/functions/ -name Icons | xargs rmdir
-    find $CVI_GADGET/functions/ -name Label | xargs rmdir
-  fi
-  rmdir $CVI_GADGET/configs/c.*/
-  rmdir $CVI_GADGET/functions/*
-  rmdir $CVI_GADGET/strings/0x409/
-  rmdir $CVI_GADGET
-  umount $CVI_DIR
-  rmdir $CVI_DIR
-}
-
-case "$1" in
-  start)
-	start
-	;;
-  stop)
-	stop
-	;;
-  probe)
-	probe
-	;;
-  UDC)
-	ls /sys/class/udc/ >$CVI_GADGET/UDC
-	;;
-  *)
-	echo "Usage: $0 probe {acm|msc|cvg|uvc|uac1} {file (msc)}"
-	echo "Usage: $0 start"
-	echo "Usage: $0 stop"
-	exit 1
-esac
-exit $?
diff --git a/device/milkv-duos-emmc/br_overlay/etc/uhubon.sh b/device/milkv-duos-emmc/br_overlay/etc/uhubon.sh
deleted file mode 100755
index a8256765db..0000000000
--- a/device/milkv-duos-emmc/br_overlay/etc/uhubon.sh
+++ /dev/null
@@ -1,83 +0,0 @@
-GPIO_HUBPORT_EN=449
-GPIO_ROLESEL=450
-GPIO_HUBRST=451
-SYS_GPIO=/sys/class/gpio
-
-hub_on() {
-  echo "turn on usb hub"
-  if [ ! -d $SYS_GPIO/gpio$GPIO_HUBPORT_EN ]; then
-      echo $GPIO_HUBPORT_EN >/sys/class/gpio/export
-  fi
-
-  if [ ! -d $SYS_GPIO/gpio$GPIO_ROLESEL ]; then
-      echo $GPIO_ROLESEL >/sys/class/gpio/export
-  fi
-
-  if [ ! -d $SYS_GPIO/gpio$GPIO_HUBRST ]; then
-      echo $GPIO_HUBRST >/sys/class/gpio/export
-  fi
-
-  echo "out" >/sys/class/gpio/gpio$GPIO_HUBPORT_EN/direction
-  echo "out" >/sys/class/gpio/gpio$GPIO_ROLESEL/direction
-  echo "out" >/sys/class/gpio/gpio$GPIO_HUBRST/direction
-
-  echo 1 >/sys/class/gpio/gpio$GPIO_HUBPORT_EN/value
-  echo 0 >/sys/class/gpio/gpio$GPIO_ROLESEL/value
-  echo 0 >/sys/class/gpio/gpio$GPIO_HUBRST/value
-}
-
-hub_off() {
-  echo "turn off usb hub"
-  if [ ! -d $SYS_GPIO/gpio$GPIO_HUBPORT_EN ]; then
-      echo $GPIO_HUBPORT_EN >/sys/class/gpio/export
-  fi
-
-  if [ ! -d $SYS_GPIO/gpio$GPIO_ROLESEL ]; then
-      echo $GPIO_ROLESEL >/sys/class/gpio/export
-  fi
-
-  if [ ! -d $SYS_GPIO/gpio$GPIO_HUBRST ]; then
-      echo $GPIO_HUBRST >/sys/class/gpio/export
-  fi
-
-  echo "out" >/sys/class/gpio/gpio$GPIO_HUBPORT_EN/direction
-  echo "out" >/sys/class/gpio/gpio$GPIO_ROLESEL/direction
-  echo "out" >/sys/class/gpio/gpio$GPIO_HUBRST/direction
-
-  echo 0 >/sys/class/gpio/gpio$GPIO_HUBPORT_EN/value
-  echo 1 >/sys/class/gpio/gpio$GPIO_ROLESEL/value
-  echo 1 >/sys/class/gpio/gpio$GPIO_HUBRST/value
-}
-
-inst_mod() {
-  insmod /mnt/system/ko/configfs.ko
-  insmod /mnt/system/ko/libcomposite.ko
-  insmod /mnt/system/ko/u_serial.ko
-  insmod /mnt/system/ko/usb_f_acm.ko
-  insmod /mnt/system/ko/cvi_usb_f_cvg.ko
-  insmod /mnt/system/ko/usb_f_uvc.ko
-  insmod /mnt/system/ko/usb_f_fs.ko
-  insmod /mnt/system/ko/u_audio.ko
-  insmod /mnt/system/ko/usb_f_uac1.ko
-  insmod /mnt/system/ko/usb_f_serial.ko
-  insmod /mnt/system/ko/usb_f_mass_storage.ko
-  insmod /mnt/system/ko/u_ether.ko
-  insmod /mnt/system/ko/usb_f_ecm.ko
-  insmod /mnt/system/ko/usb_f_eem.ko
-  insmod /mnt/system/ko/usb_f_rndis.ko
-}
-
-case "$1" in
-  host)
-	insmod /mnt/system/ko/dwc2.ko
-  echo host > /proc/cviusb/otg_role
-	;;
-  device)
-	echo device > /proc/cviusb/otg_role
-	;;
-  *)
-	echo "Usage: $0 host"
-	echo "Usage: $0 device"
-	exit 1
-esac
-exit $?
diff --git a/device/milkv-duos-emmc/br_overlay/lib/ld-musl-riscv64v0p7_xthead.so.1 b/device/milkv-duos-emmc/br_overlay/lib/ld-musl-riscv64v0p7_xthead.so.1
deleted file mode 120000
index 4665bcf84d..0000000000
--- a/device/milkv-duos-emmc/br_overlay/lib/ld-musl-riscv64v0p7_xthead.so.1
+++ /dev/null
@@ -1 +0,0 @@
-../usr/lib64v0p7_xthead/lp64d/libc.so
\ No newline at end of file
diff --git a/device/milkv-duos-emmc/br_overlay/usr/lib64v0p7_xthead/lp64d/libc.so b/device/milkv-duos-emmc/br_overlay/usr/lib64v0p7_xthead/lp64d/libc.so
deleted file mode 100755
index 8a2b8ff7d2..0000000000
Binary files a/device/milkv-duos-emmc/br_overlay/usr/lib64v0p7_xthead/lp64d/libc.so and /dev/null differ
diff --git a/device/milkv-duos-emmc/br_overlay/usr/local/bin/autologin b/device/milkv-duos-emmc/br_overlay/usr/local/bin/autologin
deleted file mode 100755
index 6f12842ec1..0000000000
--- a/device/milkv-duos-emmc/br_overlay/usr/local/bin/autologin
+++ /dev/null
@@ -1,2 +0,0 @@
-#! /bin/sh
-exec /bin/login -f root
diff --git a/device/milkv-duos-sd/br_overlay/.gitignore b/device/milkv-duos-sd/br_overlay/.gitignore
deleted file mode 100644
index d574568a70..0000000000
--- a/device/milkv-duos-sd/br_overlay/.gitignore
+++ /dev/null
@@ -1,5 +0,0 @@
-mnt/system/
-mnt/cfg/
-mnt/data/
-usr/bin
-usr/share
diff --git a/device/milkv-duos-sd/br_overlay/etc/dnsmasq.conf b/device/milkv-duos-sd/br_overlay/etc/dnsmasq.conf
deleted file mode 100644
index fcdb620ffa..0000000000
--- a/device/milkv-duos-sd/br_overlay/etc/dnsmasq.conf
+++ /dev/null
@@ -1,4 +0,0 @@
-interface=usb0
-dhcp-range=192.168.42.2,192.168.42.242,1h
-dhcp-option=3
-dhcp-option=6
diff --git a/device/milkv-duos-sd/br_overlay/etc/init.d/S99user b/device/milkv-duos-sd/br_overlay/etc/init.d/S99user
deleted file mode 100755
index 32b5248454..0000000000
--- a/device/milkv-duos-sd/br_overlay/etc/init.d/S99user
+++ /dev/null
@@ -1,50 +0,0 @@
-#!/bin/sh
-${CVI_SHOPTS}
-#
-# Start firmware
-#
-export USERDATAPATH=/mnt/data/
-export SYSTEMPATH=/mnt/system/
-
-case "$1" in
-  start)
-        echo "init mpp system..."
-        if [ -d $SYSTEMPATH/ko ]; then
-                sh $SYSTEMPATH/ko/loadsystemko.sh
-        fi
-
-        echo "Starting app..."
-
-        if [ -f $SYSTEMPATH/duo-init.sh ]; then
-                . $SYSTEMPATH/duo-init.sh &
-        fi
-
-        if [ -f $SYSTEMPATH/blink.sh ]; then
-                . $SYSTEMPATH/blink.sh &
-        fi
-
-	if [ -f $SYSTEMPATH/usb.sh ]; then
-                . $SYSTEMPATH/usb.sh &
-        fi
-
-        if [ -f $USERDATAPATH/auto.sh ]; then
-                usleep 30000
-                . $USERDATAPATH/auto.sh &
-		exit 1
-        fi
-	if [ -f $SYSTEMPATH/auto.sh ]; then
-                usleep 30000
-                . $SYSTEMPATH/auto.sh &
-        fi
-        ;;
-  stop)
-        ;;
-  restart|reload)
-        ;;
-  *)
-        echo "Usage: $0 {start|stop|restart}"
-        exit 1
-esac
-
-exit $?
-
diff --git a/device/milkv-duos-sd/br_overlay/etc/inittab b/device/milkv-duos-sd/br_overlay/etc/inittab
deleted file mode 100644
index 2c9793ce9a..0000000000
--- a/device/milkv-duos-sd/br_overlay/etc/inittab
+++ /dev/null
@@ -1,40 +0,0 @@
-# /etc/inittab
-#
-# Copyright (C) 2001 Erik Andersen <andersen@codepoet.org>
-#
-# Note: BusyBox init doesn't support runlevels.  The runlevels field is
-# completely ignored by BusyBox init. If you want runlevels, use
-# sysvinit.
-#
-# Format for each entry: <id>:<runlevels>:<action>:<process>
-#
-# id        == tty to run on, or empty for /dev/console
-# runlevels == ignored
-# action    == one of sysinit, respawn, askfirst, wait, and once
-# process   == program to run
-
-# Startup the system
-::sysinit:/bin/mount -t proc proc /proc
-::sysinit:/bin/mount -o remount,rw /
-::sysinit:/bin/mkdir -p /dev/pts /dev/shm
-::sysinit:/bin/mount -a
-::sysinit:/sbin/swapon -a
-null::sysinit:/bin/ln -sf /proc/self/fd /dev/fd
-null::sysinit:/bin/ln -sf /proc/self/fd/0 /dev/stdin
-null::sysinit:/bin/ln -sf /proc/self/fd/1 /dev/stdout
-null::sysinit:/bin/ln -sf /proc/self/fd/2 /dev/stderr
-::sysinit:/bin/hostname -F /etc/hostname
-# now run any rc scripts
-::sysinit:/etc/init.d/rcS
-
-# Put a getty on the serial port
-# console::respawn:/sbin/getty -L  console 0 vt100 # GENERIC_SERIAL
-console::respawn:/sbin/getty -L  console 115200 vt100 -n -l /usr/local/bin/autologin
-
-# Stuff to do for the 3-finger salute
-#::ctrlaltdel:/sbin/reboot
-
-# Stuff to do before rebooting
-::shutdown:/etc/init.d/rcK
-::shutdown:/sbin/swapoff -a
-::shutdown:/bin/umount -a -r
diff --git a/device/milkv-duos-sd/br_overlay/etc/profile b/device/milkv-duos-sd/br_overlay/etc/profile
deleted file mode 100644
index d99b378634..0000000000
--- a/device/milkv-duos-sd/br_overlay/etc/profile
+++ /dev/null
@@ -1,37 +0,0 @@
-export PATH="/bin:/sbin:/usr/bin:/usr/sbin"
-export PATH="/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin:/mnt/system/usr/bin:/mnt/system/usr/sbin:/mnt/data/bin:/mnt/data/sbin"
-
-if [ "$PS1" ]; then
-	if [ "`id -u`" -eq 0 ]; then
-		export PS1='# '
-	else
-		export PS1='$ '
-	fi
-fi
-
-export PAGER='/bin/more '
-export EDITOR='/bin/vi'
-
-# Source configuration files from /etc/profile.d
-for i in /etc/profile.d/*.sh ; do
-	if [ -r "$i" ]; then
-		. $i
-	fi
-	unset i
-done
-
-export HOSTNAME="$(hostname)"
-export OLDPWD=/root
-
-if [ '$USER' == 'root' ]; then
-    export PS1='[\u@\h]\w\# '
-else
-    export PS1='[\u@\h]\w\$ '
-fi
-
-alias ll='ls -alF'
-alias la='ls -A'
-alias l='ls -CF'
-
-export TERM=vt100
-export TERMINFO=/usr/share/terminfo
diff --git a/device/milkv-duos-sd/br_overlay/etc/run_usb.sh b/device/milkv-duos-sd/br_overlay/etc/run_usb.sh
deleted file mode 100755
index 760c702845..0000000000
--- a/device/milkv-duos-sd/br_overlay/etc/run_usb.sh
+++ /dev/null
@@ -1,292 +0,0 @@
-CLASS=acm
-VID=0x3346
-PID=0x1003
-MSC_PID=0x1008
-RNDIS_PID=0x1009
-UVC_PID=0x100A
-UAC_PID=0x100B
-ADB_VID=0x18D1
-ADB_PID=0x4EE0
-ADB_PID_M1=0x4EE2
-ADB_PID_M2=0x4EE4
-MANUFACTURER="Cvitek"
-PRODUCT="USB Com Port"
-PRODUCT_RNDIS="RNDIS"
-PRODUCT_UVC="UVC"
-PRODUCT_UAC="UAC"
-PRODUCT_ADB="ADB"
-ADBD_PATH=/usr/bin/
-SERIAL="0123456789"
-MSC_FILE=$3
-CVI_DIR=/tmp/usb
-CVI_GADGET=$CVI_DIR/usb_gadget/cvitek
-CVI_FUNC=$CVI_GADGET/functions
-FUNC_NUM=0
-MAX_EP_NUM=4
-TMP_NUM=0
-INTF_NUM=0
-EP_IN=0
-EP_OUT=0
-
-case "$2" in
-  acm)
-	CLASS=acm
-	;;
-  msc)
-	CLASS=mass_storage
-	PID=$MSC_PID
-	;;
-  cvg)
-	CLASS=cvg
-	;;
-  rndis)
-	CLASS=rndis
-	PID=$RNDIS_PID
-	PRODUCT=$PRODUCT_RNDIS
-	;;
-  uvc)
-	CLASS=uvc
-	PID=$UVC_PID
-	PRODUCT=$PRODUCT_UVC
-	;;
-  uac1)
-	CLASS=uac1
-	PID=$UAC_PID
-	PRODUCT=$PRODUCT_UAC
-	;;
-  adb)
-	CLASS=ffs.adb
-	VID=$ADB_VID
-	PID=$ADB_PID
-	PRODUCT=$PRODUCT_ADB
-	;;
-  *)
-	if [ "$1" = "probe" ] ; then
-	  echo "Usage: $0 probe {acm|msc|cvg|rndis|uvc|uac1|adb}"
-	  exit 1
-	fi
-esac
-
-calc_func() {
-  FUNC_NUM=$(ls $CVI_GADGET/functions -l | grep ^d | wc -l)
-  echo "$FUNC_NUM file(s)"
-}
-
-res_check() {
-  TMP_NUM=$(find $CVI_GADGET/functions/ -name "acm*" | wc -l)
-  EP_OUT=$(($EP_OUT+$TMP_NUM))
-  TMP_NUM=$(($TMP_NUM * 2))
-  EP_IN=$(($EP_IN+$TMP_NUM))
-  INTF_NUM=$(($INTF_NUM+$TMP_NUM))
-  TMP_NUM=$(find $CVI_GADGET/functions/ -name "mass_storage*" | wc -l)
-  EP_IN=$(($EP_IN+$TMP_NUM))
-  EP_OUT=$(($EP_OUT+$TMP_NUM))
-  INTF_NUM=$(($INTF_NUM+$TMP_NUM))
-  TMP_NUM=$(find $CVI_GADGET/functions/ -name "cvg*" | wc -l)
-  EP_IN=$(($EP_IN+$TMP_NUM))
-  EP_OUT=$(($EP_OUT+$TMP_NUM))
-  INTF_NUM=$(($INTF_NUM+$TMP_NUM))
-  TMP_NUM=$(find $CVI_GADGET/functions/ -name "rndis*" | wc -l)
-  EP_OUT=$(($EP_OUT+$TMP_NUM))
-  TMP_NUM=$(($TMP_NUM * 2))
-  EP_IN=$(($EP_IN+$TMP_NUM))
-  INTF_NUM=$(($INTF_NUM+$TMP_NUM))
-  TMP_NUM=$(find $CVI_GADGET/functions/ -name "uvc*" | wc -l)
-  TMP_NUM=$(($TMP_NUM * 2))
-  EP_IN=$(($EP_IN+$TMP_NUM))
-  INTF_NUM=$(($INTF_NUM+$TMP_NUM))
-  TMP_NUM=$(find $CVI_GADGET/functions/ -name "uac1*" | wc -l)
-  TMP_NUM=$(($TMP_NUM * 2))
-  EP_IN=$(($EP_IN+$TMP_NUM))
-  EP_OUT=$(($EP_OUT+$TMP_NUM))
-  INTF_NUM=$(($INTF_NUM+$TMP_NUM))
-  TMP_NUM=$(find $CVI_GADGET/functions/ -name ffs.adb | wc -l)
-  EP_IN=$(($EP_IN+$TMP_NUM))
-  EP_OUT=$(($EP_OUT+$TMP_NUM))
-  INTF_NUM=$(($INTF_NUM+$TMP_NUM))
-
-  if [ "$CLASS" = "acm" ] ; then
-    EP_IN=$(($EP_IN+2))
-    EP_OUT=$(($EP_OUT+1))
-  fi
-  if [ "$CLASS" = "mass_storage" ] ; then
-    EP_IN=$(($EP_IN+1))
-    EP_OUT=$(($EP_OUT+1))
-  fi
-  if [ "$CLASS" = "cvg" ] ; then
-    EP_IN=$(($EP_IN+1))
-    EP_OUT=$(($EP_OUT+1))
-  fi
-  if [ "$CLASS" = "rndis" ] ; then
-    EP_IN=$(($EP_IN+2))
-    EP_OUT=$(($EP_OUT+1))
-  fi
-  if [ "$CLASS" = "uvc" ] ; then
-    EP_IN=$(($EP_IN+2))
-  fi
-  if [ "$CLASS" = "uac1" ] ; then
-    EP_IN=$(($EP_IN+1))
-    EP_OUT=$(($EP_OUT+1))
-  fi
-  if [ "$CLASS" = "ffs.adb" ] ; then
-    EP_IN=$(($EP_IN+1))
-    EP_OUT=$(($EP_OUT+1))
-  fi
-  echo "$EP_IN in ep"
-  echo "$EP_OUT out ep"
-  if [ $EP_IN -gt $MAX_EP_NUM ]; then
-    echo "reach maximum resource"
-    exit 1
-  fi
-  if [ $EP_OUT -gt $MAX_EP_NUM ]; then
-    echo "reach maximum resource"
-    exit 1
-  fi
-}
-
-probe() {
-  if [ ! -d $CVI_DIR ]; then
-    mkdir $CVI_DIR
-  fi
-  if [ ! -d $CVI_DIR/usb_gadget ]; then
-    # Enale USB ConfigFS
-    mount none $CVI_DIR -t configfs
-    # Create gadget dev
-    mkdir $CVI_GADGET
-    # Set the VID and PID
-    echo $VID >$CVI_GADGET/idVendor
-    echo $PID >$CVI_GADGET/idProduct
-    # Set the product information string
-    mkdir $CVI_GADGET/strings/0x409
-    echo $MANUFACTURER>$CVI_GADGET/strings/0x409/manufacturer
-    echo $PRODUCT>$CVI_GADGET/strings/0x409/product
-    echo $SERIAL>$CVI_GADGET/strings/0x409/serialnumber
-    # Set the USB configuration
-    mkdir $CVI_GADGET/configs/c.1
-    mkdir $CVI_GADGET/configs/c.1/strings/0x409
-    echo "config1">$CVI_GADGET/configs/c.1/strings/0x409/configuration
-    # Set the MaxPower of USB descriptor
-    echo 120 >$CVI_GADGET/configs/c.1/MaxPower
-  fi
-  # get current functions number
-  calc_func
-  # assign the class code for composite device
-  if [ ! $FUNC_NUM -eq 0 ]; then
-    echo 0xEF >$CVI_GADGET/bDeviceClass
-    echo 0x02 >$CVI_GADGET/bDeviceSubClass
-    echo 0x01 >$CVI_GADGET/bDeviceProtocol
-  fi
-  # resource check
-  res_check
-  # create the desired function
-  if [ "$CLASS" = "ffs.adb" ] ; then
-    # adb shall be the last function to probe. Override the pid/vid
-    echo $VID >$CVI_GADGET/idVendor
-    echo $PID >$CVI_GADGET/idProduct
-    # choose pid for different function number
-    if [ $INTF_NUM -eq 1 ]; then
-      echo $ADB_PID_M1 >$CVI_GADGET/idProduct
-    fi
-    if [ $INTF_NUM -eq 2 ]; then
-      echo $ADB_PID_M2 >$CVI_GADGET/idProduct
-    fi
-    mkdir $CVI_GADGET/functions/$CLASS
-  else
-    mkdir $CVI_GADGET/functions/$CLASS.usb$FUNC_NUM
-  fi
-  if [ "$CLASS" = "mass_storage" ] ; then
-    echo $MSC_FILE >$CVI_GADGET/functions/$CLASS.usb$FUNC_NUM/lun.0/file
-  fi
-  if [ "$CLASS" = "rndis" ] ; then
-    #OS STRING
-    echo 1 >$CVI_GADGET/os_desc/use
-    echo 0xcd >$CVI_GADGET/os_desc/b_vendor_code
-    echo MSFT100 >$CVI_GADGET/os_desc/qw_sign
-    #COMPATIBLE ID
-    echo RNDIS >$CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/compatible_id
-    #MAKE c.1 THE ONE ASSOCIATED WITH OS DESCRIPTORS
-    ln -s $CVI_GADGET/configs/c.1 $CVI_GADGET/os_desc
-    #MAKE "Icons" EXTENDED PROPERTY
-    mkdir $CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/Icons
-    echo 2 >$CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/Icons/type
-    echo "%SystemRoot%\\system32\\shell32.dll,-233" >$CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/Icons/data
-    #MAKE "Label" EXTENDED PROPERTY
-    mkdir $CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/Label
-    echo 1 >$CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/Label/type
-    echo "XYZ Device" >$CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/Label/data
-  fi
-
-}
-
-start() {
-  # link this function to the configuration
-  calc_func
-  if [ $FUNC_NUM -eq 0 ]; then
-    echo "Functions Empty!"
-    exit 1
-  fi
-  if [ -d $CVI_GADGET/functions/ffs.adb ]; then
-    FUNC_NUM=$(($FUNC_NUM-1))
-  fi
-  for i in `seq 0 $(($FUNC_NUM-1))`;
-  do
-    find $CVI_GADGET/functions/ -name "*.usb$i" | xargs -I % ln -s % $CVI_GADGET/configs/c.1
-  done
-  if [ -d $CVI_GADGET/functions/ffs.adb ]; then
-    ln -s $CVI_GADGET/functions/ffs.adb $CVI_GADGET/configs/c.1
-    mkdir /dev/usb-ffs/adb -p
-    mount -t functionfs adb /dev/usb-ffs/adb
-    if [ -f $ADBD_PATH/adbd ]; then
-	$ADBD_PATH/adbd &
-    fi
-  else
-    # Start the gadget driver
-    UDC=`ls /sys/class/udc/ | awk '{print $1}'`
-    echo ${UDC} >$CVI_GADGET/UDC
-  fi
-}
-
-stop() {
-  if [ -d $CVI_GADGET/configs/c.1/ffs.adb ]; then
-    pkill adbd
-    rm $CVI_GADGET/configs/c.1/ffs.adb
-  else
-    echo "" >$CVI_GADGET/UDC
-  fi
-  find $CVI_GADGET/configs/ -name "*.usb*" | xargs rm -f
-  rmdir $CVI_GADGET/configs/c.*/strings/0x409/
-  tmp_dirs=$(find $CVI_GADGET/os_desc/c.* -type d)
-  if [ -n tmp_dirs ]; then
-    echo "remove os_desc!"
-    rm -rf $CVI_GADGET/os_desc/c.*/
-    find $CVI_GADGET/functions/ -name Icons | xargs rmdir
-    find $CVI_GADGET/functions/ -name Label | xargs rmdir
-  fi
-  rmdir $CVI_GADGET/configs/c.*/
-  rmdir $CVI_GADGET/functions/*
-  rmdir $CVI_GADGET/strings/0x409/
-  rmdir $CVI_GADGET
-  umount $CVI_DIR
-  rmdir $CVI_DIR
-}
-
-case "$1" in
-  start)
-	start
-	;;
-  stop)
-	stop
-	;;
-  probe)
-	probe
-	;;
-  UDC)
-	ls /sys/class/udc/ >$CVI_GADGET/UDC
-	;;
-  *)
-	echo "Usage: $0 probe {acm|msc|cvg|uvc|uac1} {file (msc)}"
-	echo "Usage: $0 start"
-	echo "Usage: $0 stop"
-	exit 1
-esac
-exit $?
diff --git a/device/milkv-duos-sd/br_overlay/etc/uhubon.sh b/device/milkv-duos-sd/br_overlay/etc/uhubon.sh
deleted file mode 100755
index a8256765db..0000000000
--- a/device/milkv-duos-sd/br_overlay/etc/uhubon.sh
+++ /dev/null
@@ -1,83 +0,0 @@
-GPIO_HUBPORT_EN=449
-GPIO_ROLESEL=450
-GPIO_HUBRST=451
-SYS_GPIO=/sys/class/gpio
-
-hub_on() {
-  echo "turn on usb hub"
-  if [ ! -d $SYS_GPIO/gpio$GPIO_HUBPORT_EN ]; then
-      echo $GPIO_HUBPORT_EN >/sys/class/gpio/export
-  fi
-
-  if [ ! -d $SYS_GPIO/gpio$GPIO_ROLESEL ]; then
-      echo $GPIO_ROLESEL >/sys/class/gpio/export
-  fi
-
-  if [ ! -d $SYS_GPIO/gpio$GPIO_HUBRST ]; then
-      echo $GPIO_HUBRST >/sys/class/gpio/export
-  fi
-
-  echo "out" >/sys/class/gpio/gpio$GPIO_HUBPORT_EN/direction
-  echo "out" >/sys/class/gpio/gpio$GPIO_ROLESEL/direction
-  echo "out" >/sys/class/gpio/gpio$GPIO_HUBRST/direction
-
-  echo 1 >/sys/class/gpio/gpio$GPIO_HUBPORT_EN/value
-  echo 0 >/sys/class/gpio/gpio$GPIO_ROLESEL/value
-  echo 0 >/sys/class/gpio/gpio$GPIO_HUBRST/value
-}
-
-hub_off() {
-  echo "turn off usb hub"
-  if [ ! -d $SYS_GPIO/gpio$GPIO_HUBPORT_EN ]; then
-      echo $GPIO_HUBPORT_EN >/sys/class/gpio/export
-  fi
-
-  if [ ! -d $SYS_GPIO/gpio$GPIO_ROLESEL ]; then
-      echo $GPIO_ROLESEL >/sys/class/gpio/export
-  fi
-
-  if [ ! -d $SYS_GPIO/gpio$GPIO_HUBRST ]; then
-      echo $GPIO_HUBRST >/sys/class/gpio/export
-  fi
-
-  echo "out" >/sys/class/gpio/gpio$GPIO_HUBPORT_EN/direction
-  echo "out" >/sys/class/gpio/gpio$GPIO_ROLESEL/direction
-  echo "out" >/sys/class/gpio/gpio$GPIO_HUBRST/direction
-
-  echo 0 >/sys/class/gpio/gpio$GPIO_HUBPORT_EN/value
-  echo 1 >/sys/class/gpio/gpio$GPIO_ROLESEL/value
-  echo 1 >/sys/class/gpio/gpio$GPIO_HUBRST/value
-}
-
-inst_mod() {
-  insmod /mnt/system/ko/configfs.ko
-  insmod /mnt/system/ko/libcomposite.ko
-  insmod /mnt/system/ko/u_serial.ko
-  insmod /mnt/system/ko/usb_f_acm.ko
-  insmod /mnt/system/ko/cvi_usb_f_cvg.ko
-  insmod /mnt/system/ko/usb_f_uvc.ko
-  insmod /mnt/system/ko/usb_f_fs.ko
-  insmod /mnt/system/ko/u_audio.ko
-  insmod /mnt/system/ko/usb_f_uac1.ko
-  insmod /mnt/system/ko/usb_f_serial.ko
-  insmod /mnt/system/ko/usb_f_mass_storage.ko
-  insmod /mnt/system/ko/u_ether.ko
-  insmod /mnt/system/ko/usb_f_ecm.ko
-  insmod /mnt/system/ko/usb_f_eem.ko
-  insmod /mnt/system/ko/usb_f_rndis.ko
-}
-
-case "$1" in
-  host)
-	insmod /mnt/system/ko/dwc2.ko
-  echo host > /proc/cviusb/otg_role
-	;;
-  device)
-	echo device > /proc/cviusb/otg_role
-	;;
-  *)
-	echo "Usage: $0 host"
-	echo "Usage: $0 device"
-	exit 1
-esac
-exit $?
diff --git a/device/milkv-duos-sd/br_overlay/lib/ld-musl-riscv64v0p7_xthead.so.1 b/device/milkv-duos-sd/br_overlay/lib/ld-musl-riscv64v0p7_xthead.so.1
deleted file mode 120000
index 4665bcf84d..0000000000
--- a/device/milkv-duos-sd/br_overlay/lib/ld-musl-riscv64v0p7_xthead.so.1
+++ /dev/null
@@ -1 +0,0 @@
-../usr/lib64v0p7_xthead/lp64d/libc.so
\ No newline at end of file
diff --git a/device/milkv-duos-sd/br_overlay/usr/lib64v0p7_xthead/lp64d/libc.so b/device/milkv-duos-sd/br_overlay/usr/lib64v0p7_xthead/lp64d/libc.so
deleted file mode 100755
index 8a2b8ff7d2..0000000000
Binary files a/device/milkv-duos-sd/br_overlay/usr/lib64v0p7_xthead/lp64d/libc.so and /dev/null differ
diff --git a/device/milkv-duos-sd/br_overlay/usr/local/bin/autologin b/device/milkv-duos-sd/br_overlay/usr/local/bin/autologin
deleted file mode 100755
index 6f12842ec1..0000000000
--- a/device/milkv-duos-sd/br_overlay/usr/local/bin/autologin
+++ /dev/null
@@ -1,2 +0,0 @@
-#! /bin/sh
-exec /bin/login -f root
diff --git a/device/milkv-duos-sd/overlay/mnt/cfg/param/cvi_sdr_bin b/device/milkv-duos-sd/overlay/mnt/cfg/param/cvi_sdr_bin
deleted file mode 120000
index a40ffa9981..0000000000
--- a/device/milkv-duos-sd/overlay/mnt/cfg/param/cvi_sdr_bin
+++ /dev/null
@@ -1 +0,0 @@
-cvi_sdr_bin_GC2083
\ No newline at end of file
diff --git a/device/milkv-duos-sd/overlay/mnt/cfg/param/cvi_sdr_bin_GC2083 b/device/milkv-duos-sd/overlay/mnt/cfg/param/cvi_sdr_bin_GC2083
deleted file mode 100644
index a44ed2d9d3..0000000000
Binary files a/device/milkv-duos-sd/overlay/mnt/cfg/param/cvi_sdr_bin_GC2083 and /dev/null differ
diff --git a/device/milkv-duos-sd/overlay/mnt/cfg/param/cvi_sdr_bin_SC035HGS b/device/milkv-duos-sd/overlay/mnt/cfg/param/cvi_sdr_bin_SC035HGS
deleted file mode 100644
index 37578e5ef8..0000000000
Binary files a/device/milkv-duos-sd/overlay/mnt/cfg/param/cvi_sdr_bin_SC035HGS and /dev/null differ
diff --git a/device/milkv-duos-sd/overlay/mnt/cvimodel/scrfd_768_432_int8_1x.cvimodel b/device/milkv-duos-sd/overlay/mnt/cvimodel/scrfd_768_432_int8_1x.cvimodel
new file mode 100644
index 0000000000..b3672e624d
Binary files /dev/null and b/device/milkv-duos-sd/overlay/mnt/cvimodel/scrfd_768_432_int8_1x.cvimodel differ
diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/CviIspTool.sh b/device/milkv-duos-sd/overlay/mnt/data/install/CviIspTool.sh
deleted file mode 100755
index d90b9c01c6..0000000000
--- a/device/milkv-duos-sd/overlay/mnt/data/install/CviIspTool.sh
+++ /dev/null
@@ -1,107 +0,0 @@
-#!/bin/sh
-
-# Camera2 I2C2 init
-cvi_pinmux -w IIC2_SCL/IIC2_SCL
-cvi_pinmux -w IIC2_SDA/IIC2_SDA
-
-sleep 1
-
-#DEFAULT_HOST="192.168.1.3"
-
-echo 16777216 > /proc/sys/net/core/wmem_max
-echo "4096 873800 16777216" > /proc/sys/net/ipv4/tcp_wmem
-echo "3073344 4097792 16777216" > /proc/sys/net/ipv4/tcp_mem
-
-if [ "$1" == "64M" ]; then
-	CFG_JSON_FILE="./cfg_64M.json"
-elif [ "$1" == "128M" ]; then
-	CFG_JSON_FILE="./cfg_128M.json"
-else
-	echo "Please input size of RAM!"
-	echo "e.g. ./CviIspTool.sh 64M"
-	exit 0
-fi
-
-if [ -z "$CVI_RTSP_JSON" ]; then
-    export CVI_RTSP_JSON=$CFG_JSON_FILE
-fi
-
-getopts_get_optional_argument() {
-    eval next_token=\${$OPTIND}
-    if [[ -n $next_token && $next_token != -* ]]; then
-        OPTIND=$((OPTIND + 1))
-        OPTARG=$next_token
-    else
-        OPTARG=""
-    fi
-}
-
-# $1 is used, $2 shift to $1
-shift
-
-sed -i 's/"dev-num": 2/"dev-num": 1/g' $CFG_JSON_FILE
-while getopts "hgmi" OPTION; do
-    case $OPTION in
-        i)
-            getopts_get_optional_argument $@
-            if [ -z "$OPTARG" ]; then
-                HOST=${DEFAULT_HOST}
-            else
-                HOST=$OPTARG
-            fi
-            echo "set the IP address $HOST to network interface"
-            ;;
-        g)
-            GIGABIT="true"
-            echo "use gigabit ethernet"
-            ;;
-        m)
-            if [ -z "$CVI_RTSP_MODE" ]; then
-                export CVI_RTSP_MODE=1
-            fi
-            echo "use multi rtsp server"
-            sed -i 's/"dev-num": 1/"dev-num": 2/g' $CFG_JSON_FILE
-            ;;
-        h)
-            echo "Usage:"
-            echo "   -i     set the IP address to network interface"
-            echo "   -g     use gigabit ethernet"
-            echo "   -m     use multi rtsp server"
-            echo "   -h     help (this output)"
-            exit 0
-            ;;
-    esac
-done
-
-# disable vcodec debug message to minize latency
-if [ -d "/sys/module/cv181x_vcodec/" ];then
-echo 0x20001 > /sys/module/cv181x_vcodec/parameters/vcodec_mask
-elif [ -d "/sys/module/cv180x_vcodec/" ];then
-echo 0x20001 > /sys/module/cv180x_vcodec/parameters/vcodec_mask
-fi
-# enable remap
-echo 1 > /sys/module/cvi_vc_driver/parameters/addrRemapEn
-echo 256 > /sys/module/cvi_vc_driver/parameters/ARExtraLine
-
-#if [ "$HOST" ]; then
-#    if [ "$GIGABIT" == "true" ]; then
-#        # enable gigabit ethernet (=eth1)
-#        ifconfig eth0 down
-#        ifconfig eth1 up
-#        ifconfig eth1 $HOST netmask 255.255.255.0
-#        #udhcpc -b -i eth1 -R & # unmakr this line to use DHCP
-#    else
-#        ifconfig eth1 down
-#        ifconfig eth0 up
-#        ifconfig eth0 $HOST netmask 255.255.255.0
-#        #udhcpc -b -i eth1 -R & # unmark this line to use DHCP
-#    fi
-#fi
-
-# for eaier debugging, add $PWD to LD_LIBRARY_PATH and PATH
-SCRIPT_SELF=$(cd "$(dirname "$0")"; pwd)
-export LD_LIBRARY_PATH=${SCRIPT_SELF}/lib:${SCRIPT_SELF}/lib/ai:${LD_LIBRARY_PATH}:/mnt/system/usr/lib:/mnt/system/usr/lib/3rd:/lib/3rd
-
-PATH=${SCRIPT_SELF}:/mnt/system/usr/bin:$PATH
-cd ${SCRIPT_SELF}
-isp_tool_daemon
diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/cfg_128M.json b/device/milkv-duos-sd/overlay/mnt/data/install/cfg_128M.json
deleted file mode 100644
index 008e0d8dd2..0000000000
--- a/device/milkv-duos-sd/overlay/mnt/data/install/cfg_128M.json
+++ /dev/null
@@ -1,49 +0,0 @@
-{
-	"//": "-----------------------------------------------------------------------------------------------------------------------------------------------------",
-	"//": "more option please refer https://cvitekcn-my.sharepoint.com/:x:/g/personal/tjyoung_cvitek_com/EavTSnA63CNAl2ZXmKwZnaoBK45WzoKdsrEQ7gwXNxKOpQ?e=l3hgB8",
-	"//": "-----------------------------------------------------------------------------------------------------------------------------------------------------",
-	"//": "compress-mode none,tile,line,frame",
-	"//": "if run AI(face ae) function, make buf1-blk-cnt 4 please!",
-	"//": "we set venc-bind-vpss=1 can cost down vb blk",
-	"//": "bitstream-buf-size can set venc buffer size",
-	"//": "vi-vpss-mode 0.VI_OFFLINE_VPSS_OFFLINE 1.VI_OFFLINE_VPSS_ONLINE",
-	"//": "vi-vpss-mode 2.VI_ONLINE_VPSS_OFFLINE  3.VI_ONLINE_VPSS_ONLINE",
-	"//": "when it is wdr mode or dual sensor, we cant't set VI_ONLINE_VPSS_OFFLINE/VI_ONLINE_VPSS_ONLINE",
-	"//": "devNum decides whether to run oneRtspServer or dualRtspServer",
-	"//": "devNum=1 dualSensor use the same video-src-info chn0 settings",
-	"//": "if run sbm mode, set vi-vpss-mode 1 set venc-bind-vpss true",
-	"dev-num": 1,
-	"rtsp-port": 8554,
-	"buf1-blk-cnt": 0,
-	"vi-vpss-mode": 1,
-	"model": "./cvi_models/retinaface_mnet0.25_342_608.cvimodel",
-	"sbm": 0,
-	"sbm-buf-line": 64,
-	"sbm-buf-size": 16,
-	"video-src-info": [
-		{
-			"chn": 0,
-			"buf-blk-cnt": 2,
-			"venc-bind-vpss": false,
-			"enable-isp-info-osd": false,
-			"enable-retinaface": false,
-			"venc_json": "./vc_param_128M.json",
-			"codec": "265",
-			"gop": 50,
-			"bitrate": 5000,
-			"compress-mode": "tile"
-		},
-		{
-			"chn": 1,
-			"buf-blk-cnt": 5,
-			"venc-bind-vpss": false,
-			"enable-isp-info-osd": false,
-			"enable-retinaface": false,
-			"venc_json": "/mnt/data/vc_param.json",
-			"codec": "265",
-			"gop": 50,
-			"bitrate": 5000,
-			"compress-mode": "tile"
-		}
-	]
-}
diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/cfg_64M.json b/device/milkv-duos-sd/overlay/mnt/data/install/cfg_64M.json
deleted file mode 100644
index 0ab2e8b525..0000000000
--- a/device/milkv-duos-sd/overlay/mnt/data/install/cfg_64M.json
+++ /dev/null
@@ -1,51 +0,0 @@
-{
-	"//": "-----------------------------------------------------------------------------------------------------------------------------------------------------",
-	"//": "more option please refer https://cvitekcn-my.sharepoint.com/:x:/g/personal/tjyoung_cvitek_com/EavTSnA63CNAl2ZXmKwZnaoBK45WzoKdsrEQ7gwXNxKOpQ?e=l3hgB8",
-	"//": "-----------------------------------------------------------------------------------------------------------------------------------------------------",
-	"//": "compress-mode none,tile,line,frame",
-	"//": "if run AI(face ae) function, make buf1-blk-cnt 4 please!",
-	"//": "we set venc-bind-vpss=1 can cost down vb blk",
-	"//": "bitstream-buf-size can set venc buffer size",
-	"//": "vi-vpss-mode 0.VI_OFFLINE_VPSS_OFFLINE 1.VI_OFFLINE_VPSS_ONLINE",
-	"//": "vi-vpss-mode 2.VI_ONLINE_VPSS_OFFLINE  3.VI_ONLINE_VPSS_ONLINE",
-	"//": "when it is wdr mode or dual sensor, we cant't set VI_ONLINE_VPSS_OFFLINE/VI_ONLINE_VPSS_ONLINE",
-	"//": "devNum decides whether to run oneRtspServer or dualRtspServer",
-	"//": "devNum=1 dualSensor use the same video-src-info chn0 settings",
-	"//": "if run sbm mode, set vi-vpss-mode 1 set venc-bind-vpss true",
-	"dev-num": 1,
-	"rtsp-port": 8554,
-	"buf1-blk-cnt": 0,
-	"vi-vpss-mode": 1,
-	"model": "./cvi_models/retinaface_mnet0.25_342_608.cvimodel",
-	"sbm": 0,
-	"sbm-buf-line": 64,
-	"sbm-buf-size": 16,
-	"video-src-info": [
-		{
-			"chn": 0,
-			"buf-blk-cnt": 5,
-			"venc-bind-vpss": false,
-			"enable-isp-info-osd": false,
-			"enable-retinaface": false,
-			"venc_json": "./vc_param_64M.json",
-			"codec": "265",
-			"gop": 50,
-			"bitrate": 2000,
-			"compress-mode": "tile",
-			"rc-mode": 0,
-			"bitstream-buf-size": 524288
-		},
-		{
-			"chn": 1,
-			"buf-blk-cnt": 5,
-			"venc-bind-vpss": false,
-			"enable-isp-info-osd": false,
-			"enable-retinaface": false,
-			"venc_json": "/mnt/data/vc_param.json",
-			"codec": "265",
-			"gop": 50,
-			"bitrate": 5000,
-			"compress-mode": "tile"
-		}
-	]
-}
diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/config.ini b/device/milkv-duos-sd/overlay/mnt/data/install/config.ini
deleted file mode 100644
index c8f01b558f..0000000000
--- a/device/milkv-duos-sd/overlay/mnt/data/install/config.ini
+++ /dev/null
@@ -1,8 +0,0 @@
-[LOG]
-level = 3
-[PQBIN]
-isEnableSetPQBin = 1
-SDR_PQBinName = /mnt/data/bin/cvi_sdr_bin
-WDR_PQBinName = /mnt/data/bin/cvi_wdr_bin
-isEnableSetSnsCfgPath = 1
-SnsCfgPath = ./sensor_cfg.ini
diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/cvi_models/retinaface_mnet0.25_342_608.cvimodel b/device/milkv-duos-sd/overlay/mnt/data/install/cvi_models/retinaface_mnet0.25_342_608.cvimodel
deleted file mode 100644
index 5d0b18d7d5..0000000000
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diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/cvi_models/version b/device/milkv-duos-sd/overlay/mnt/data/install/cvi_models/version
deleted file mode 100644
index 5743e6b3d2..0000000000
--- a/device/milkv-duos-sd/overlay/mnt/data/install/cvi_models/version
+++ /dev/null
@@ -1,2 +0,0 @@
-[2022-06-13]
-retinaface_mnet0.25_342_608.cvimodel
diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/isp_tool_daemon b/device/milkv-duos-sd/overlay/mnt/data/install/isp_tool_daemon
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diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libavcodec.so b/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libavcodec.so
deleted file mode 120000
index a2335869ad..0000000000
--- a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libavcodec.so
+++ /dev/null
@@ -1 +0,0 @@
-libavcodec.so.58.106.100
\ No newline at end of file
diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libavcodec.so.58 b/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libavcodec.so.58
deleted file mode 120000
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-libavcodec.so.58.106.100
\ No newline at end of file
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diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libavformat.so b/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libavformat.so
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-libavformat.so.58.58.100
\ No newline at end of file
diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libavformat.so.58 b/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libavformat.so.58
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+++ /dev/null
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-libavformat.so.58.58.100
\ No newline at end of file
diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libavformat.so.58.58.100 b/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libavformat.so.58.58.100
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diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libavutil.so b/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libavutil.so
deleted file mode 120000
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--- a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libavutil.so
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-libavutil.so.56.59.100
\ No newline at end of file
diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libavutil.so.56 b/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libavutil.so.56
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+++ /dev/null
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-libavutil.so.56.59.100
\ No newline at end of file
diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libavutil.so.56.59.100 b/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libavutil.so.56.59.100
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diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libcnpy.so b/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libcnpy.so
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--- a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libcrypto.so
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-libcrypto.so.1.1
\ No newline at end of file
diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libcrypto.so.1.1 b/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libcrypto.so.1.1
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diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libcvi_json-c.so b/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libcvi_json-c.so
deleted file mode 120000
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--- a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libcvi_json-c.so
+++ /dev/null
@@ -1 +0,0 @@
-libcvi_json-c.so.5
\ No newline at end of file
diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libcvi_json-c.so.5 b/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libcvi_json-c.so.5
deleted file mode 120000
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--- a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libcvi_json-c.so.5
+++ /dev/null
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-libcvi_json-c.so.5.1.0
\ No newline at end of file
diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libcvi_json-c.so.5.1.0 b/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libcvi_json-c.so.5.1.0
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diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libcviai.so b/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libcviai.so
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diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libcvikernel.so b/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libcvikernel.so
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diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libcviruntime.so b/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libcviruntime.so
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diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libjson-c.so b/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libjson-c.so
deleted file mode 120000
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--- a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libjson-c.so
+++ /dev/null
@@ -1 +0,0 @@
-libjson-c.so.5
\ No newline at end of file
diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libjson-c.so.5 b/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libjson-c.so.5
deleted file mode 120000
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--- a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libjson-c.so.5
+++ /dev/null
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-libjson-c.so.5.1.0
\ No newline at end of file
diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libjson-c.so.5.1.0 b/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libjson-c.so.5.1.0
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diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libnanomsg.so b/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libnanomsg.so
deleted file mode 120000
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--- a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libnanomsg.so
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-libnanomsg.so.5
\ No newline at end of file
diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libnanomsg.so.5 b/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libnanomsg.so.5
deleted file mode 120000
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+++ /dev/null
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-libnanomsg.so.5.1.0
\ No newline at end of file
diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libnanomsg.so.5.1.0 b/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libnanomsg.so.5.1.0
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diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libopencv_core.so b/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libopencv_core.so
deleted file mode 120000
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--- a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libopencv_core.so
+++ /dev/null
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-libopencv_core.so.3.2
\ No newline at end of file
diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libopencv_core.so.3.2 b/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libopencv_core.so.3.2
deleted file mode 120000
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-libopencv_core.so.3.2.0
\ No newline at end of file
diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libopencv_core.so.3.2.0 b/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libopencv_core.so.3.2.0
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diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libopencv_imgcodecs.so b/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libopencv_imgcodecs.so
deleted file mode 120000
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--- a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libopencv_imgcodecs.so
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-libopencv_imgcodecs.so.3.2
\ No newline at end of file
diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libopencv_imgcodecs.so.3.2 b/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libopencv_imgcodecs.so.3.2
deleted file mode 120000
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-libopencv_imgcodecs.so.3.2.0
\ No newline at end of file
diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libopencv_imgcodecs.so.3.2.0 b/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libopencv_imgcodecs.so.3.2.0
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diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libopencv_imgproc.so b/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libopencv_imgproc.so
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-libopencv_imgproc.so.3.2
\ No newline at end of file
diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libopencv_imgproc.so.3.2 b/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libopencv_imgproc.so.3.2
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-libopencv_imgproc.so.3.2.0
\ No newline at end of file
diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libopencv_imgproc.so.3.2.0 b/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libopencv_imgproc.so.3.2.0
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diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libsqlite3.so b/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libsqlite3.so
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-libsqlite3.so.0.8.6
\ No newline at end of file
diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libsqlite3.so.0 b/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libsqlite3.so.0
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-libsqlite3.so.0.8.6
\ No newline at end of file
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-libssl.so.1.1
\ No newline at end of file
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-libswresample.so.3.8.100
\ No newline at end of file
diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libswresample.so.3 b/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libswresample.so.3
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\ No newline at end of file
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diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libthttpd.so b/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libthttpd.so
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\ No newline at end of file
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index 95e0ebd563..0000000000
--- a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libz.so.1
+++ /dev/null
@@ -1 +0,0 @@
-libz.so.1.2.11
\ No newline at end of file
diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libz.so.1.2.11 b/device/milkv-duos-sd/overlay/mnt/data/install/lib/ai/libz.so.1.2.11
deleted file mode 100644
index 986e2009d5..0000000000
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diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/lib/libcvi_RES1.so b/device/milkv-duos-sd/overlay/mnt/data/install/lib/libcvi_RES1.so
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deleted file mode 100755
index c4e94ee836..0000000000
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deleted file mode 100755
index c1ce047565..0000000000
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diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/lib/libcvi_rtsp.so b/device/milkv-duos-sd/overlay/mnt/data/install/lib/libcvi_rtsp.so
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diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/lib/libcvi_ssp.so b/device/milkv-duos-sd/overlay/mnt/data/install/lib/libcvi_ssp.so
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deleted file mode 100644
index f03c794417..0000000000
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index f03c794417..0000000000
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index 253b5bf34f..0000000000
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diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/lib/libraw_dump.so b/device/milkv-duos-sd/overlay/mnt/data/install/lib/libraw_dump.so
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index ac7ff02c6f..0000000000
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index b335d22b22..0000000000
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index 00190c1523..0000000000
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diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/lib/libvdec.so b/device/milkv-duos-sd/overlay/mnt/data/install/lib/libvdec.so
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index caadd243ff..0000000000
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diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/lib/libvenc.so b/device/milkv-duos-sd/overlay/mnt/data/install/lib/libvenc.so
deleted file mode 100755
index b4500e1ce4..0000000000
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diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/lib/libvpu.so b/device/milkv-duos-sd/overlay/mnt/data/install/lib/libvpu.so
deleted file mode 100755
index 27b00f7db8..0000000000
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diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/pqtool_definition.json b/device/milkv-duos-sd/overlay/mnt/data/install/pqtool_definition.json
deleted file mode 100644
index 7cf034c9f0..0000000000
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diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/test/empty.json b/device/milkv-duos-sd/overlay/mnt/data/install/test/empty.json
deleted file mode 100755
index 0967ef424b..0000000000
--- a/device/milkv-duos-sd/overlay/mnt/data/install/test/empty.json
+++ /dev/null
@@ -1 +0,0 @@
-{}
diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/test/h264.json b/device/milkv-duos-sd/overlay/mnt/data/install/test/h264.json
deleted file mode 100755
index ea84e449c9..0000000000
--- a/device/milkv-duos-sd/overlay/mnt/data/install/test/h264.json
+++ /dev/null
@@ -1,5 +0,0 @@
-{
-    "video-src-info": [{
-        "codec": "264"
-    }]
-}
diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/test/h265.json b/device/milkv-duos-sd/overlay/mnt/data/install/test/h265.json
deleted file mode 100755
index 3671480c3a..0000000000
--- a/device/milkv-duos-sd/overlay/mnt/data/install/test/h265.json
+++ /dev/null
@@ -1,5 +0,0 @@
-{
-    "video-src-info": [{
-        "codec": "265"
-    }]
-}
diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/test/retinaface.json b/device/milkv-duos-sd/overlay/mnt/data/install/test/retinaface.json
deleted file mode 100755
index 52f48330e6..0000000000
--- a/device/milkv-duos-sd/overlay/mnt/data/install/test/retinaface.json
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-    "model": "../cvi_models/retinaface_mnet0.25_342_608.cvimodel",
-    "video-src-info": [{
-        "chn": 0,
-        "venc-bind-vpss": false,
-        "enable-retinaface": true
-    }]
-}
diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/test/rtsp_client b/device/milkv-duos-sd/overlay/mnt/data/install/test/rtsp_client
deleted file mode 100755
index e209455797..0000000000
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diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/test/rtsp_server b/device/milkv-duos-sd/overlay/mnt/data/install/test/rtsp_server
deleted file mode 100755
index 4a86e9c02f..0000000000
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diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/test/test_aisdk_lib b/device/milkv-duos-sd/overlay/mnt/data/install/test/test_aisdk_lib
deleted file mode 100755
index cee5772c92..0000000000
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diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/test/test_cvi_rtsp.sh b/device/milkv-duos-sd/overlay/mnt/data/install/test/test_cvi_rtsp.sh
deleted file mode 100755
index 0805dc580e..0000000000
--- a/device/milkv-duos-sd/overlay/mnt/data/install/test/test_cvi_rtsp.sh
+++ /dev/null
@@ -1,62 +0,0 @@
-#!/bin/sh
-
-export LD_LIBRARY_PATH=$(pwd)/../lib:$(pwd)/../aisdk_lib/lib:$LD_LIBRARY_PATH
-
-SILENT=0
-
-usage() {
-    echo "$0 -t [ unittest | ai | all ] [-s]"
-    echo "    -t test item"
-    echo "    -v silent"
-}
-
-while getopts 'st:' c
-do
-  case $c in
-    s) SILENT=1;;
-    t)
-        TYPE=$OPTARG
-        if [ $TYPE != "all" -a $TYPE != "ai" -a $TYPE != "unittest" ]; then
-            usage
-            exit 1
-        fi
-        ;;
-     *)
-        usage
-        exit 1
-  esac
-done
-
-if [ "$TYPE" = "" ]; then
-    usage
-    exit 1
-fi
-
-if [ $TYPE = "unittest" -o $TYPE = "all" ]; then
-    echo "CVI_RTSP UNITTEST TEST"
-    if [ $SILENT = 1 ]; then
-        ./test_unittest > /dev/null 2>&1
-    else
-        ./test_unittest
-    fi
-
-    if [ $? = 0 ]; then
-        echo "TEST-PASS"
-    else
-        echo "TEST-FAIL"
-    fi
-fi
-
-if [ $TYPE = "ai" -o $TYPE = "all" ]; then
-    echo "CVI_RTSP AISDK_LIB TEST"
-    if [ $SILENT = 1 ]; then
-        ./test_aisdk_lib > /dev/null 2>&1
-    else
-        ./test_aisdk_lib
-    fi
-    if [ $? = 0 ]; then
-        echo "TEST-PASS"
-    else
-        echo "TEST-FAIL"
-    fi
-fi
diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/test/test_streaming.sh b/device/milkv-duos-sd/overlay/mnt/data/install/test/test_streaming.sh
deleted file mode 100755
index 5819b7fa2b..0000000000
--- a/device/milkv-duos-sd/overlay/mnt/data/install/test/test_streaming.sh
+++ /dev/null
@@ -1,57 +0,0 @@
-#!/bin/sh
-
-SILENT=0
-export LD_LIBRARY_PATH=$(pwd)/../lib:$LD_LIBRARY_PATH
-
-usage() {
-    echo "$0 -t [ h264 | h265 ] [-s]"
-    echo "    -t test item"
-    echo "    -v silent"
-}
-
-run_rtsp_server() {
-    if [ $SILENT = 1 ]; then
-        timeout 10 ./rtsp_server ${TYPE}.json > /dev/null 2>&1
-    else
-        timeout 10 ./rtsp_server ${TYPE}.json
-    fi
-}
-
-rtsp_client() {
-    if [ $SILENT = 1 ]; then
-        timeout 5 ./rtsp_client rtsp://127.0.0.1/stream0 > /dev/null 2>&1
-    else
-        timeout 5 ./rtsp_client rtsp://127.0.0.1/stream0
-    fi
-    if [ $? = 0 ]; then
-        echo "TEST-PASS"
-    else
-        echo "TEST-FAIL"
-    fi
-}
-
-while getopts 'st:' c
-do
-  case $c in
-    s) SILENT=1;;
-    t)
-        TYPE=$OPTARG
-        if [ $TYPE != "h264" -a $TYPE != "h265" ]; then
-            usage
-            exit 1
-        fi
-        ;;
-     *)
-        usage
-        exit 1
-  esac
-done
-
-if [ "$TYPE" = "" ]; then
-    usage
-    exit 1
-fi
-
-run_rtsp_server &
-sleep 2
-rtsp_client
diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/test/test_unittest b/device/milkv-duos-sd/overlay/mnt/data/install/test/test_unittest
deleted file mode 100755
index 2f2cf9431b..0000000000
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diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/vc_param_128M.json b/device/milkv-duos-sd/overlay/mnt/data/install/vc_param_128M.json
deleted file mode 100644
index 1974825e53..0000000000
--- a/device/milkv-duos-sd/overlay/mnt/data/install/vc_param_128M.json
+++ /dev/null
@@ -1,284 +0,0 @@
-{
-    "Coding Param": {
-        "items": [
-            {
-                "key": "FrmLostOpen",
-                "optype": "Manual",
-                "value": 0,
-                "value_type": "int"
-            },
-            {
-                "key": "LostMode",
-                "optype": "Manual",
-                "value": 1,
-                "value_type": "int"
-            },
-            {
-                "key": "FrmLostBpsThr",
-                "optype": "Manual",
-                "value": 0,
-                "value_type": "int"
-            },
-            {
-                "key": "EncFrmGaps",
-                "optype": "Manual",
-                "value": 0,
-                "value_type": "int"
-            },
-            {
-                "key": "IntraCost",
-                "optype": "Manual",
-                "value": 0,
-                "value_type": "int"
-            },
-            {
-                "key": "aspectRatioInfoPresentFlag",
-                "optype": "Manual",
-                "value": 0,
-                "value_type": "int"
-            },
-            {
-                "key": "overscanInfoPresentFlag",
-                "optype": "Manual",
-                "value": 0,
-                "value_type": "int"
-            },
-            {
-                "key": "videoSignalTypePresentFlag",
-                "optype": "Manual",
-                "value": 1,
-                "value_type": "int"
-            },
-            {
-                "key": "videoFormat",
-                "optype": "Manual",
-                "value": 5,
-                "value_type": "int"
-            },
-            {
-                "key": "videoFullRangeFlag",
-                "optype": "Manual",
-                "value": 1,
-                "value_type": "int"
-            },
-            {
-                "key": "colourDescriptionPresentFlag",
-                "optype": "Manual",
-                "value": 0,
-                "value_type": "int"
-            },
-           {
-                "key": "ChromaQpOffset",
-                "optype": "Manual",
-                "value": -6,
-                "value_type": "int"
-            },
-            {
-                "key": "CbQpOffset",
-                "optype": "Manual",
-                "value": -6,
-                "value_type": "int"
-            },
-            {
-                "key": "CrQpOffset",
-                "optype": "Manual",
-                "value": -6,
-                "value_type": "int"
-            }
-        ],
-        "module": "Coding Param",
-        "optype": "Manual"
-    },
-    "Gop Mode": {
-        "items": [
-            {
-                "key": "GopMode",
-                "optype": "Manual",
-                "value": 0,
-                "value_type": "int"
-            },
-            {
-                "key": "IPQpDelta",
-                "optype": "Manual",
-                "value": 2,
-                "value_type": "int"
-            },
-            {
-                "key": "BgInterval",
-                "optype": "Manual",
-                "value": 250,
-                "value_type": "int"
-            },
-            {
-                "key": "BgQpDelta",
-                "optype": "Manual",
-                "value": 0,
-                "value_type": "int"
-            },
-            {
-                "key": "ViQpDelta",
-                "optype": "Manual",
-                "value": 0,
-                "value_type": "int"
-            }
-        ],
-        "module": "Gop Mode",
-        "optype": "Manual"
-    },
-    "RC Attr": {
-        "items": [
-            {
-                "key": "RcMode",
-                "optype": "Manual",
-                "value": 0,
-                "value_type": "int"
-            },
-            {
-                "key": "Gop",
-                "optype": "Manual",
-                "value": 50,
-                "value_type": "int"
-            },
-            {
-                "key": "VariableFPS",
-                "optype": "Manual",
-                "value": 0,
-                "value_type": "int"
-            },
-            {
-                "key": "SrcFrmRate",
-                "optype": "Manual",
-                "value": 25,
-                "value_type": "int"
-            },
-            {
-                "key": "DstFrmRate",
-                "optype": "Manual",
-                "value": 25,
-                "value_type": "int"
-            },
-            {
-                "key": "StatTime",
-                "optype": "Manual",
-                "value": 2,
-                "value_type": "int"
-            },
-            {
-                "key": "BitRate",
-                "optype": "Manual",
-                "value": 4096,
-                "value_type": "int"
-            },
-            {
-                "key": "MaxBitrate",
-                "optype": "Manual",
-                "value": 2000,
-                "value_type": "int"
-            },
-            {
-                "key": "IQP",
-                "optype": "Manual",
-                "value": 38,
-                "value_type": "int"
-            },
-            {
-                "key": "PQP",
-                "optype": "Manual",
-                "value": 38,
-                "value_type": "int"
-            }
-        ],
-        "module": "RC Attr",
-        "optype": "Manual"
-    },
-    "RC Param": {
-        "items": [
-            {
-                "key": "ThrdLv",
-                "optype": "Manual",
-                "value": 2,
-                "value_type": "int"
-            },
-            {
-                "key": "FirstFrameStartQp",
-                "optype": "Manual",
-                "value": 32,
-                "value_type": "int"
-            },
-            {
-                "key": "InitialDelay",
-                "optype": "Manual",
-                "value": 1000,
-                "value_type": "int"
-            },
-            {
-                "key": "MaxQp",
-                "optype": "Manual",
-                "value": 51,
-                "value_type": "int"
-            },
-            {
-                "key": "MinQp",
-                "optype": "Manual",
-                "value": 20,
-                "value_type": "int"
-            },
-            {
-                "key": "MaxIQp",
-                "optype": "Manual",
-                "value": 51,
-                "value_type": "int"
-            },
-            {
-                "key": "MinIQp",
-                "optype": "Manual",
-                "value": 20,
-                "value_type": "int"
-            },
-            {
-                "key": "ChangePos",
-                "optype": "Manual",
-                "value": 90,
-                "value_type": "int"
-            },
-            {
-                "key": "MinStillPercent",
-                "optype": "Manual",
-                "value": 10,
-                "value_type": "int"
-            },
-            {
-                "key": "MaxStillQP",
-                "optype": "Manual",
-                "value": 31,
-                "value_type": "int"
-            },
-            {
-                "key": "MotionSensitivity",
-                "optype": "Manual",
-                "value": 24,
-                "value_type": "int"
-            },
-            {
-                "key": "PureStillThr",
-                "optype": "Manual",
-                "value": 4,
-                "value_type": "int"
-            },
-            {
-                "key": "AvbrFrmLostOpen",
-                "optype": "Manual",
-                "value": 0,
-                "value_type": "int"
-            },
-            {
-                "key": "AvbrFrmGap",
-                "optype": "Manual",
-                "value": 1,
-                "value_type": "int"
-            }
-        ],
-        "module": "RC Param",
-        "optype": "Manual"
-    }
-}
diff --git a/device/milkv-duos-sd/overlay/mnt/data/install/vc_param_64M.json b/device/milkv-duos-sd/overlay/mnt/data/install/vc_param_64M.json
deleted file mode 100644
index 4854470184..0000000000
--- a/device/milkv-duos-sd/overlay/mnt/data/install/vc_param_64M.json
+++ /dev/null
@@ -1,236 +0,0 @@
-{
-    "Coding Param": {
-        "items": [
-            {
-                "key": "FrmLostOpen",
-                "optype": "Manual",
-                "value": 0,
-                "value_type": "int"
-            },
-            {
-                "key": "LostMode",
-                "optype": "Manual",
-                "value": 1,
-                "value_type": "int"
-            },
-            {
-                "key": "FrmLostBpsThr",
-                "optype": "Manual",
-                "value": 0,
-                "value_type": "int"
-            },
-            {
-                "key": "EncFrmGaps",
-                "optype": "Manual",
-                "value": 0,
-                "value_type": "int"
-            },
-            {
-                "key": "IntraCost",
-                "optype": "Manual",
-                "value": 0,
-                "value_type": "int"
-            }
-        ],
-        "module": "Coding Param",
-        "optype": "Manual"
-    },
-    "Gop Mode": {
-        "items": [
-            {
-                "key": "GopMode",
-                "optype": "Manual",
-                "value": 0,
-                "value_type": "int"
-            },
-            {
-                "key": "IPQpDelta",
-                "optype": "Manual",
-                "value": 2,
-                "value_type": "int"
-            },
-            {
-                "key": "BgInterval",
-                "optype": "Manual",
-                "value": 250,
-                "value_type": "int"
-            },
-            {
-                "key": "BgQpDelta",
-                "optype": "Manual",
-                "value": 0,
-                "value_type": "int"
-            },
-            {
-                "key": "ViQpDelta",
-                "optype": "Manual",
-                "value": 0,
-                "value_type": "int"
-            }
-        ],
-        "module": "Gop Mode",
-        "optype": "Manual"
-    },
-    "RC Attr": {
-        "items": [
-            {
-                "key": "RcMode",
-                "optype": "Manual",
-                "value": 0,
-                "value_type": "int"
-            },
-            {
-                "key": "Gop",
-                "optype": "Manual",
-                "value": 50,
-                "value_type": "int"
-            },
-            {
-                "key": "VariableFPS",
-                "optype": "Manual",
-                "value": 1,
-                "value_type": "int"
-            },
-            {
-                "key": "SrcFrmRate",
-                "optype": "Manual",
-                "value": 25,
-                "value_type": "int"
-            },
-            {
-                "key": "DstFrmRate",
-                "optype": "Manual",
-                "value": 25,
-                "value_type": "int"
-            },
-            {
-                "key": "StatTime",
-                "optype": "Manual",
-                "value": 2,
-                "value_type": "int"
-            },
-            {
-                "key": "BitRate",
-                "optype": "Manual",
-                "value": 1000,
-                "value_type": "int"
-            },
-            {
-                "key": "MaxBitrate",
-                "optype": "Manual",
-                "value": 8192,
-                "value_type": "int"
-            },
-            {
-                "key": "IQP",
-                "optype": "Manual",
-                "value": 38,
-                "value_type": "int"
-            },
-            {
-                "key": "PQP",
-                "optype": "Manual",
-                "value": 38,
-                "value_type": "int"
-            }
-        ],
-        "module": "RC Attr",
-        "optype": "Manual"
-    },
-    "RC Param": {
-        "items": [
-            {
-                "key": "ThrdLv",
-                "optype": "Manual",
-                "value": 2,
-                "value_type": "int"
-            },
-            {
-                "key": "FirstFrameStartQp",
-                "optype": "Manual",
-                "value": 34,
-                "value_type": "int"
-            },
-            {
-                "key": "InitialDelay",
-                "optype": "Manual",
-                "value": 1000,
-                "value_type": "int"
-            },
-            {
-                "key": "MaxQp",
-                "optype": "Manual",
-                "value": 51,
-                "value_type": "int"
-            },
-            {
-                "key": "MinQp",
-                "optype": "Manual",
-                "value": 20,
-                "value_type": "int"
-            },
-            {
-                "key": "MaxIprop",
-                "optype": "Manual",
-                "value": 10,
-                "value_type": "int"
-            },
-            {
-                "key": "MaxIQp",
-                "optype": "Manual",
-                "value": 51,
-                "value_type": "int"
-            },
-            {
-                "key": "MinIQp",
-                "optype": "Manual",
-                "value": 20,
-                "value_type": "int"
-            },
-            {
-                "key": "ChangePos",
-                "optype": "Manual",
-                "value": 90,
-                "value_type": "int"
-            },
-            {
-                "key": "MinStillPercent",
-                "optype": "Manual",
-                "value": 20,
-                "value_type": "int"
-            },
-            {
-                "key": "MaxStillQP",
-                "optype": "Manual",
-                "value": 38,
-                "value_type": "int"
-            },
-            {
-                "key": "MotionSensitivity",
-                "optype": "Manual",
-                "value": 24,
-                "value_type": "int"
-            },
-            {
-                "key": "PureStillThr",
-                "optype": "Manual",
-                "value": 4,
-                "value_type": "int"
-            },
-            {
-                "key": "AvbrFrmLostOpen",
-                "optype": "Manual",
-                "value": 0,
-                "value_type": "int"
-            },
-            {
-                "key": "AvbrFrmGap",
-                "optype": "Manual",
-                "value": 1,
-                "value_type": "int"
-            }
-        ],
-        "module": "RC Param",
-        "optype": "Manual"
-    }
-}
\ No newline at end of file
diff --git a/device/milkv-duos-sd/overlay/mnt/data/sensor_cfg_OV5647_J1.ini b/device/milkv-duos-sd/overlay/mnt/data/sensor_cfg_OV5647_J1.ini
new file mode 100644
index 0000000000..98282e1869
--- /dev/null
+++ b/device/milkv-duos-sd/overlay/mnt/data/sensor_cfg_OV5647_J1.ini
@@ -0,0 +1,14 @@
+;section for source
+[source]
+;type = SOURCE_USER_FE
+dev_num = 1
+;section for sensor
+[sensor] 
+;sensor name 
+name = OV_OV5647_MIPI_2M_30FPS_10BIT
+;bus/i2c dev number
+bus_id = 3
+sns_i2c_addr = 36
+mipi_dev = 0
+lane_id = 2, 0, 1, -1, -1
+pn_swap = 0, 0, 0,  0,  0
diff --git a/device/milkv-duos-sd/overlay/mnt/data/sensor_cfg_OV5647.ini b/device/milkv-duos-sd/overlay/mnt/data/sensor_cfg_OV5647_J2.ini
similarity index 100%
rename from device/milkv-duos-sd/overlay/mnt/data/sensor_cfg_OV5647.ini
rename to device/milkv-duos-sd/overlay/mnt/data/sensor_cfg_OV5647_J2.ini
diff --git a/device/milkv-duos-sd/overlay/mnt/data/sensor_cfg_SC035HGS.ini b/device/milkv-duos-sd/overlay/mnt/data/sensor_cfg_SC035HGS.ini
new file mode 100644
index 0000000000..9cfce63c22
--- /dev/null
+++ b/device/milkv-duos-sd/overlay/mnt/data/sensor_cfg_SC035HGS.ini
@@ -0,0 +1,14 @@
+;section for source
+[source]
+;type = SOURCE_USER_FE
+dev_num = 1
+;section for sensor
+[sensor] 
+;sensor name 
+name = SMS_SC035HGS_MIPI_480P_120FPS_12BIT
+;bus/i2c dev number
+bus_id = 3
+sns_i2c_addr = 30
+mipi_dev = 0
+lane_id = 2, 0, 1, -1, -1
+pn_swap = 0, 0, 0, 0, 0
diff --git a/device/milkv-duos-sd/overlay/mnt/data/sensor_cfg_default.ini b/device/milkv-duos-sd/overlay/mnt/data/sensor_cfg_SC200AI.ini
similarity index 85%
rename from device/milkv-duos-sd/overlay/mnt/data/sensor_cfg_default.ini
rename to device/milkv-duos-sd/overlay/mnt/data/sensor_cfg_SC200AI.ini
index 12d9aca1a1..c25fdb1e4c 100644
--- a/device/milkv-duos-sd/overlay/mnt/data/sensor_cfg_default.ini
+++ b/device/milkv-duos-sd/overlay/mnt/data/sensor_cfg_SC200AI.ini
@@ -7,8 +7,8 @@ dev_num = 1
 ;sensor name 
 name = SMS_SC200AI_MIPI_2M_30FPS_10BIT
 ;bus/i2c dev number
-bus_id = 2
+bus_id = 3
 sns_i2c_addr = 30
 mipi_dev = 0
-lane_id = 1, 0, 2, -1, -1
+lane_id = 2, 0, 1, -1, -1
 pn_swap = 0, 0, 0, 0, 0
diff --git a/device/milkv-duos-sd/overlay/usr/share/fw_vcodec/coda980.bin b/device/milkv-duos-sd/overlay/usr/share/fw_vcodec/coda980.bin
deleted file mode 100755
index 47240d8574..0000000000
Binary files a/device/milkv-duos-sd/overlay/usr/share/fw_vcodec/coda980.bin and /dev/null differ
diff --git a/device/milkv-duos-sd/overlay/usr/share/fw_vcodec/monet.bin b/device/milkv-duos-sd/overlay/usr/share/fw_vcodec/monet.bin
deleted file mode 100755
index dd4d799731..0000000000
Binary files a/device/milkv-duos-sd/overlay/usr/share/fw_vcodec/monet.bin and /dev/null differ