For many users, rather than a full firmware flash, the most effective "update" is actually updating the Android Auto app itself through the Google Play Store
: Users have reported that some "latest" unofficial updates can lead to freezing, broken Radio FM, or clock synchronization errors. : For Junsun-specific units, check their Official Support Pages Android Auto Firmware Latest Update 8227l
These units from a single manufacturer. Instead, updates are shared by enthusiasts on XDA, 4PDA, or car audio forums. Always match your board ID before flashing. For many users, rather than a full firmware