If you are reading this guide because you just bought this unit: Consider returning it. For $50 more, you can get a unit with a chip, which has true Android 10/12, fast boot, and official OTA updates.
Power on the unit. Some units will auto-detect the update . alps 8227l-demo firmware update
The MCU (Microcontroller Unit) manages radio, touch, and power. Write down the number found in Settings > System > MCU ID . It will look like MTCE_HA_V3.60 or 8227L_XXXX . Note: Updating the MCU separately from the Android system is sometimes required. If you are reading this guide because you