First post - fix worked for me
I'm a noob too, and I also had this same problem on my 1.2.4349.
I followed the nvflash instructions here: www (dot) slatedroid (dot) com/topic/17150-recovery-nvflash-full-restore-using-either-11-or-12-based-images-g-tablet/
(sorry i can't make a real link until I have 8 posts)
and it fixed my tablet back with stock.
Hope this helps you too.