: Fixing "boot loops" where the head unit gets stuck on the logo screen.

: Use a FAT32-formatted USB stick (8GB to 32GB is ideal).

Updating a head unit is a delicate process. If the wrong version is used, it can "brick" the device (make it permanently unusable).

Do you have the or MCU string from your head unit's settings to confirm this is the right file for your specific device?

: Moving to a more stable version of Android (often Android 10 or 11, depending on the hardware). How to Install This Firmware