Try the reset button method again. If that fails, you need to short the CLK pin on the motherboard to force boot from USB – an advanced repair. Consider buying a new motherboard from AliExpress for $30.
: Most stable Android 11 updates for this chipset require at least 2GB of RAM 32GB of storage Fake Versions 8227l Android 11 Firmware Download
Before downloading, you must verify your head unit's specific version. Most firmware updates for the 8227L are specifically designed for the version. Try the reset button method again