[G Tablet General] drakaeb:
I originally purchased a GTablet from the original Woot! sale based on reviews during that sale that this was a wonderful tablet once a new rom was installed. The first tablet I purchased as a gift for my wife. I received it on a Friday after I got off work. Within about an hour, I was up and running with TNT Lite, a fully functional app market and Adobe Flash Player.

I primarily followed this guide from these forums. I had zero problems and everything worked flawlessly following the guide.

I was so impressed with the tablet, when it came up on Woot! again, I decided to purchase another one. This tablet arrived quickly, and by all appearances was the same as the tablet for my wife. I checked the stock OS, installed the OTA update and verified I was on 1.1 3588. I proceeded to follow the guide again and ran into problems immediately with the app market.

I used the basic app market fix listed and no matter how many times I did it, I couldn't see the majority of apps. I then began looking around the forums and found this guide for the titanium backup method. I followed this exactly and still the market wouldn't work.

I found one more guide (can't find the link now) that instructed me to edit files on the tablet to known working configurations. I grabbed the files and they already had exactly what the guide was telling me to change to. So no luck there.

I then remembered reading that some Roms had a working app market out of the box. I figured I'd try VEGAn or Cyanogen Rom instead of TNT Lite to see if this fixed this problem. This is when I ran into another brick wall. I was completely unable to load these Roms on my tablet. After performing the install in ClockWork Mod and rebooting, the tablet would get the ViewSonic screen with Birds and never complete the boot. I left it on that screen for as long as an hour and still nothing worked.

I came back to the forums looking for more information. Buried deep in the VEGAn 7.0 thread I found a gem from someone who had a similar boot problem (they made no mention of market problems). This person said they were able to fix the boot problems by using NVFlash to restore the tablet to original settings and pointed towards this thread as a possible fix.

I followed the steps in there directly. I was hung up for about 20 minutes trying to figure out how to use NVFlash and ClockWork mod until it dawned on me that accessing for NVFlash was used with the Volume Minus button instead of the Volume Plus button. So if you are confused in that section, keep in mind they use different power up methods and don't conflict.

After using NVFlash and restoring back to the original settings I was able to get into the stock rom. I tried the OTA update immediately and it failed after the download. Restarting the tablet fixed the problem. After you are able to boot back into the stock rom, I recommend a restart just in case. Then do the OTA 1.1 3588 update.

I then followed the original guide again. This time, everything worked as expected. Using TNTLite and the Market Fix worked the first time. I formatted and installed VEGAn and it worked on the first time too.

I decided to make this post as a thank you to everyone out there who works on these ROMs and everyone who has posted fixes to their problems. Hopefully this will help anyone else that is having problems.

My wife and I absolutely love our tablets and this wouldn't be possible without the fine people here.

TLDR;

Market was broken and known Market Fix didn't work. Used NVFlash and it fixed it.

NVFlash uses Volume Minus not Volume Plus

Restart Stock OS after first boot before installing OTA update