You updated, but now Wi-Fi is greyed out. This is a "persist partition" mismatch. You need to re-flash the persist image. This requires root access and ADB commands ( dd if=/sdcard/persist.img of=/dev/block/by-name/persist ).
: Native support for wireless Android Auto and Apple CarPlay via apps like "Car Link" or "ZLink". uis7862 firmware
Success. Android 13 works. Lost no data. However, my reverse camera guidelines disappeared. Fixed by flashing the original MCU file from my backup. You updated, but now Wi-Fi is greyed out
Enhancing the DSP (Digital Signal Processor) software for better sound staging. uis7862 firmware