I have a bricked HI-13 in my hands. Unsoldered BIOS and EC eeprom and reflashed them with the V14 bios. I needed to unsolder the W25Q64 because it’s didn’t got 1.8v on the VCC pin when on board. Once unsoldered and using a 1.8V line converter, I was able to program it. Battery is around 8V. When pressing power button, EC bios gets 3.3v for 13-14s and 5v line is also ok. Still no 1.8V on main bios, thus probably CPU doesn’t get powered either. Black screen and no leds Somebody a similar experience ?
I have the same problem as you. My HI13 is dead after doing that infamous 1.14 BIOS update. No boot, no charging LED. My tablet serial number is Q64G45170901726
Did you manage to repair your tablet ?
Thanks.
