Improvements to Bluetooth stability and Apple CarPlay/Android Auto wireless connections.
Ensure your unit is indeed a Rockchip PX3. You can verify this by tapping the "Android Version" multiple times in settings; if an "N" appears, it's Android 7.1 (Nougat); a "K" indicates Android 4.4 (KitKat). rkpx3 mcu update
Comprehensive Guide to RKPX3 MCU Updates for Android Car Stereos if an "N" appears
Before attempting an update, you must identify your current version and gather the right tools. it's Android 7.1 (Nougat)