Originally Posted by DavidET
This article is for majority of ViewSonic G Tablet users who want to use their tablet for work, productivity and entertainment instead of spending more than 5% of their use time, fixing it. However, if you enjoy playing with your device configurations or if you are a professional developer who do this for living obviously this article is not for you.
Thanks DavidET. I saw your message too late... my gtablet does not boot or go into recovery mode... it only shows 3 birds.
It would be hard to diagnose without knowing what your tablet's original bootloader is (1.1 or 1.2) and what rom where you trying to root to (a 1.1 rom or a 1.2 rom). However, NVFlash should get you back to the original state of your tablet.
A good place to read up and download the appropriate tools is here:
Start Here - Viewsonic GTablet For Dummies
Go to the CODE RED section.