Better compatibility with Android 11 and newer iOS versions for screen mirroring.
Flashing the wrong firmware is the leading cause of "black-screen" failures where the unit becomes unresponsive. Only proceed if you have a specific issue you are trying to fix, and ensure the firmware version exactly matches your hardware. Updating via System Settings (Recommended) 7010b radio firmware update 2021
Use a paperclip to press the "RES" hole on the front panel before inserting the USB. Better compatibility with Android 11 and newer iOS
The most reliable databases for these specific units are localized automotive and electronics forums. 7010b radio firmware update 2021
: Download the correct firmware package (often found via the seller on AliExpress