Ensure your car battery is strong, or use a 12V 5A DC bench power supply if updating outside the car. Never shut off the car during the update.
Reinstall the 64-bit Spreadtrum/Unisoc USB drivers. Use a dedicated USB 2.0 port instead of a newer USB 3.0 port on your computer. sp9853i 1h10 vmm firmware update full
Firmware packages with no vmm.bin , or those claiming to be "universal SP9853i". Ensure your car battery is strong, or use
Before downloading any files, you must confirm that your device matches the exact hardware profile. How To Update Your Android Head Unit + Apps Ensure your car battery is strong