Do not use SP Flash Tool – that is for MediaTek. For Unisoc/Spreadtrum, you need:
If you cannot find a 1H10 VMM update online but have a friend’s identical tablet that is stable, you can dump the VMM firmware using dd :
file and connect the head unit via USB while it is powered off. : Click "Start Downloading" to begin the flashing process. sp9853i 1h10 vmm firmware update
: Ensure your USB drive is formatted to FAT32. Try using a smaller USB drive (e.g., 8GB or 16GB) or switching to a different USB port on the back of the radio.
Remove the USB drive immediately to prevent the loop from restarting. Navigate back to Factory Settings . Do not use SP Flash Tool – that is for MediaTek
Download the verified SP9853i 1H10 VMM firmware package (usually provided as a .zip or .rar archive). Extract the archive directly to your computer.
Turn on your car's ignition so the head unit powers up fully. : Ensure your USB drive is formatted to FAT32
Before downloading any files, you must verify that your device matches these exact specifications. Flashing firmware meant for a different mainboard revision will permanently brick your unit.