Starting App/Addon not possible anymore due to API Changes

[manuveli]

Govee Device SKU

H61BA & H61BC

Govee2MQTT Version

2025.10.26-b29dee52

Describe the issue

Hi,

looks like Govee changed something to their API and since then it's not possible anymore to query it.

It's not the tipical issue described in #76 where you simply remove the credentials. This one throws out a 400 and is a new error.

[2026-04-03T09:15:35 INFO  govee::commands::serve] Starting service. version 2025.10.26-b29dee52
[2026-04-03T09:15:35 INFO  govee::commands::serve] Querying platform API for device list
[2026-04-03T09:15:35 INFO  govee::commands::serve] Querying undocumented API for device + room list
Error: Error during initial undoc API discovery: request https://app2.govee.com/account/rest/account/v1/login status 200: OK: parsing https://app2.govee.com/account/rest/account/v1/login response: Failed with status 400 Bad Request Bad Request: Request to https://app2.govee.com/account/rest/account/v1/login failed with code 400 Bad Request The app version is too low, please upgrade the version!. Full response: {"status":400,"message":"The app version is too low, please upgrade the version!"}

Hope you can take a deeper look and provide a quick fix soon.

Thanks in advance!

Startup Diagnostics

b9845f46_govee2mqtt_2026-04-03T20-22-58.842Z.log

Additional Logs

No response

Home Assistant Logs

No response

Anything else?

No response

[manuveli]

just provided a Pull Request to fix:

#650

@wez Hope you can review and merge asap.

[manuveli]

@wez

also providing a proof that it's working after the fix:

[2026-04-04T09:01:37 INFO  govee::commands::serve] Starting service. version 2026.03.25-ab9deb66
[2026-04-04T09:01:37 INFO  govee::commands::serve] Querying platform API for device list
[2026-04-04T09:01:38 INFO  govee::commands::serve] Querying undocumented API for device + room list
[2026-04-04T09:01:39 INFO  govee::service::iot] Connected to IoT: aqm3wd1qlc3dy-ats.iot.us-east-1.amazonaws.com:8883 CONNACK code 0: Connection Accepted.
[2026-04-04T09:01:39 INFO  govee::commands::serve] Starting LAN discovery
[2026-04-04T09:01:39 INFO  govee::service::iot] IoT (re)connected with status CONNACK code 0: Connection Accepted.
[2026-04-04T09:01:39 INFO  govee::commands::serve] Waiting 10 seconds for LAN API discovery
[2026-04-04T09:01:49 INFO  govee::commands::serve] Devices returned from Govee's APIs
[2026-04-04T09:01:49 INFO  govee::commands::serve] TV 5m LED Strip (XX:XX:XX:XX:XX:XX:XX:XX H61BA)
[2026-04-04T09:01:49 INFO  govee::commands::serve]   LAN API: ip=192.168.XXX.XXX

[Ruel33]

Is there going to ever be an update or we just pull our user name and password and deal with slow response times forever?

[nungster]

Hey @manuveli — submitted PR #656 with the complete 2FA fix based on the work we did in your fork. Single focused change to src/undoc_api.rs with the full flow: 454 detection → auto verification request → GOVEE_2FA_CODE env var → v2 login with code → cache poisoning fix. Running solid in production.