A brief update.
I purchased a used duplicate tablet off eBay for just $50 (no KB, no accessories. Works great.) for the purpose of saving a copy of the BIOS (including settings saved to the same chip) to a .bin file, then copying that over to the disabled tablet. (If successful, I'll have two working tablets and can resell one to recoup some of my losses. If not, I'll at least have one working tablet.)
Something odd has come up though. I downloaded the "
Aptio 4 Firmware Update Tool" software from the AMI website and it reported I needed the software for
"Aptio V". So apparently, the bios on the tablet is
already "Aptio V"... just an earlier version w/o touch-screen support (2016).
So I used the Aptio V software to make a copy of the BIOS on the "new" tablet, and despite having a 64MB Bios, the saved .bin file is less than 5MB.
Does this make sense to anyone? Shouldn't the .bin file be a full 64MB (since the Winbond FlashRAM chip is 64MB)? I don't have another bios/bin file (for this tablet) to compare it to, but the latest BIOS download for my desktop PC is only 6MB, so maybe that's right.
Very confusing.
