Same issue as everyone else. Did a BIOS update without realising it was not the correct one for my board and bricked the device. I have bought a CH341a programmer and tried flashing both BIOS chips (bios and EC) with every version I could find and still the device does not turn on. Looking for any other BIOS versions that might work.
Thanks!
PS I emailed aftersales@chuwi and they told me to flash the version 114 which is the one that bricked the device in the first place.