Will have a look ovEr in the vid card forum for you & will link some posts. Here :(:eek::eek:
Not finding the info I was lookin, for will post it once I,m home tonight
The PDF is the 8-1 pin mod....
I see from your post #10 your going the hardware flash ......always the best way
You will have to open the ones that might be right & compare the info to find the right 1 for your card. Good Luck...
You might get more info over @ XDA. But it's a safe bet that any tablet you get will have to be rooted & you will need to make or find custom Roms later in it's life.
FYI this was posted using a 2011 Moto Zoom running 5.1