Xyauto 9212b Firmware Update //free\\

| Problem | Possible Cause | Solution | |--------|----------------|------------| | USB not detected in recovery | USB drive not FAT32 or too large (>32GB) | Reformat as FAT32, use a smaller drive (8GB recommended) | | "Signature verification failed" | Corrupted zip or wrong device | Redownload firmware; verify MD5 checksum if provided | | Stuck on boot logo after update | Incompatible MCU or resolution | Boot into recovery (Reset + power) and wipe cache/data, then reflash correct firmware | | Touch screen not working after update | Wrong resolution firmware | Use mouse or keyboard to navigate to factory settings and change resolution | | No sound | DSP settings corrupted | Go to factory settings (password 1234) → DSP → reload default preset | | Reverse camera no longer triggers | CAN bus config lost | Re-select car brand and CAN bus type in factory settings | | Wi-Fi or Bluetooth missing | Wrong MCU version | Reflash the correct MCU bin file (do not mix MTCE with GS) |

of your formatted USB drive (do not put them inside a folder). 3. The Update Process It is highly recommended to keep the car engine running xyauto 9212b firmware update