Android F9212b-00020-v001 Online

This is the hardest part. Chinese head unit manufacturers do not have centralized support websites. Here is where to look:

Has anyone found a stable firmware update beyond v001? I’ve seen some XYAuto firmware tutorials Android F9212b-00020-v001

If you want custom features (like DAB-Z, Viper4Android, or Tasker automation), install them as without modifying system partitions. This is the hardest part