diff --git a/EosLib/packet/definitions.py b/EosLib/packet/definitions.py
index 83f7f23..48ba586 100644
--- a/EosLib/packet/definitions.py
+++ b/EosLib/packet/definitions.py
@@ -30,10 +30,11 @@ class HeaderPreamble(IntEnum):
     V010DATA = 2
     V020DATA = 3
     V030DATA = 4
-    TRANSMIT = 6
+    V201TRANSMIT = 6
     V020TRANSMIT = 1
+    TRANSMIT = 7
     DATA = 5
 
 
 old_data_headers = [HeaderPreamble.V010DATA, HeaderPreamble.V020DATA, HeaderPreamble.V030DATA]
-old_transmit_headers = [HeaderPreamble.V020TRANSMIT]
+old_transmit_headers = [HeaderPreamble.V020TRANSMIT, HeaderPreamble.V201TRANSMIT]
diff --git a/EosLib/packet/transmit_header.py b/EosLib/packet/transmit_header.py
index 98d3b44..f41cd6b 100644
--- a/EosLib/packet/transmit_header.py
+++ b/EosLib/packet/transmit_header.py
@@ -10,7 +10,7 @@ class TransmitHeader:
 
     transmit_header_struct_format_string = "!" \
                                            "B" \
-                                           "b" \
+                                           "B" \
                                            "B" \
                                            "d"
 
diff --git a/setup.py b/setup.py
index 0ddf82a..5a0b931 100644
--- a/setup.py
+++ b/setup.py
@@ -4,7 +4,7 @@
 from setuptools import find_packages
 
 setup(name='EosLib',
-      version='2.0.1',
+      version='3.0.0',
       description='Library of shared code between EosPayload and EosGround',
       author='Lightning From The Edge of Space',
       author_email='thomasmholder@gmail.com',