The most common mistake. A technician sees "UNISOC" and downloads firmware for an SC9863A (ARM). Flashing ARM bootloaders onto the SP9853i (x86) instantly corrupts the VMM structure, triggering 1h10.
Why does this happen? Based on service center reports and developer forums, the top causes are:
Using a poor quality USB cable or a USB 3.0 port (vs USB 2.0) can introduce bit errors during the VMM upload phase. The BootROM is extremely sensitive to voltage drops during the 1h handshake.