I’m not sure which BIOS you flashed and if you flashed it on a Vi10, Vi10 Pro or a Vi10 Ultimate? Also what’s the ID printed on the bottom left of your tablet?
Have you tried pressing volume up and the power button or what about pressing volume up, down and the power button? Keep holding volume up and down, but take your finger off the on button after a second or two.
Normally even if you get the BIOS version wrong the tablet will still boot, but as yours doesn’t seem to get that far you may need to take the tablet apart and use a BIOS programmer.
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