Hi, I have a smilar problem, but have installed V971 V1 firmware on a V971 V2 version. I had again installed the correct version but it still doesn't switch on (no booting).
Any help how I can restart it.
I have mistakenly upgraded my Onda V971 V2 with the V1 firmware. It is now not booting, screen stays black with no logo.
I have upgrade it again with the V2 firmware (says upgrade successful) but still same problem.
Anyone can help with this? If there is a way to wipe (format) the tablet...