: Fixing "boot loops" where the head unit gets stuck on the logo screen.
: Use a FAT32-formatted USB stick (8GB to 32GB is ideal). GF200821-TRL-1.2-GG.rar
Do you have the or MCU string from your head unit's settings to confirm this is the right file for your specific device? : Fixing "boot loops" where the head unit
: Adding support for newer versions of Zlink (for CarPlay/Android Auto) or improving Bluetooth stability. GF200821-TRL-1.2-GG.rar
Updating a head unit is a delicate process. If the wrong version is used, it can "brick" the device (make it permanently unusable).