: Obtain the specific firmware file (often a .zip or .img) from a reputable source like the Xyauto Support Site (Password: 123456) or your device manufacturer.
: General advice for Chinese Android head units is to avoid updates if the device is currently working properly due to the risks involved. Firmware Identification sp9853i 1h10 vmm firmware update
In a Linux terminal or DOS prompt:
fastboot oem get-vmm-version
If you see 1h10 , your device is not dead—it is waiting for a to re-initialize the DDR memory controller. : Obtain the specific firmware file (often a