Now that you have ClockworkMod Recovery 8 installed, you are almost there. There are many ways to install ROM’s on Android devices, but I find this one is the one that will work well with many of them on your device. Other methods don’t work well with particular ROM’s. And I think this one doesn’t work particularly well with earlier versions of TNT Lite. But for the most part it is pretty standard.
I have CyanogenMod 7 currently installed on my G Tablet. I started with Vegan 5. Why? Because that’s what my co-worker used on his tablet. And since it was working fine on his I figured I would start there. Whichever you use just make sure you have the proper zip files. For Vegan 5 you will want the gtab.VEGAn.1.00.beta5.1.user.final.zip file. You can download it from http://vegantab.gojimi.com/downloads/. Also make sure you get the supplement file gtab.VEGAn.1.00.beta5.11.suppl.zip. It has some additional fixes for the ROM. It can be downloaded at http://www.mediafire.com/?jhq1cnu5wgkg3j5. There are lesser CyanogenMod files than 7, but they really aren’t worth the effort IMO. Just go ahead and get the 7 Final release from the cyanogen.mod site. If you go to the Wiki link at the top it will take you to a great step by step download page and instructions for installing this rom. Get the Final release zip and get the accompanying Google apps install file. You will need that as well. Once you have all of your zip files downloaded, place them on your microsd card for use in the install process. You can leave the ClockworkMod Recovery files on as well in case you need to re-install the file. It will happen sometimes that the first flash of any of these ROM’s won’t take. So you may need to install a second time. No worries on that front. If life and installs were always perfect it would be boring, yes? 😉
A quick note which you have probably already figured out at this point…how to get files onto your microSD. Either you can power up and connect the tablet via usb to your pc for copying of files to it, or if your usb connection shows the internal SD of the tablet and not the card, copy the zip files there and then use File Manager on the tablet to copy them to the root of the card. And in general I keep all of my install zips at root level for ease seeing them in Clockwork Recovery.
Okay, now that you have the install files good to go on the SD (internal and/or external), power off the unit then boot into Recovery mode via the Volume + and Power buttons. Again you will see the notice recovery key detected. Let go and wait for the menu options to appear. Once they do, use the volume button to scroll through your options and the Home icon to select the option you want. Before any system install peform a wipe data/factory reset, then perform a wipe cache partition. Additionally you may want to select advanced and perform a wipe Dalvik cache. The reason why is because you want to make sure that no cached files from another ROM will interfere with your install. Once you have done all of your wipes, select install zip from sdcard from the main menu. Then select choose zip from sdcard. This will then show you your options that you downloaded to the tablet. If you are installing Vegan first install the main zip file then the supplemental. If you are installing CynanogenMod 7 install the main zip file then the Google apps file after. Once installs are complete select reboot system now and you should be on your way to happiness (I hope).
How will you know you were successful? As your unit reboots you will probably still see the Viewsonic birds. But from there the view will probably be different. You may or may not see the G Tablet logo. More often than not you will see the word ANDROID on your screen and then a new boot animation. After the boot animation you will have to through the steps to log into your Google account. This will allow for syncing of accounts and access to the Market. In some instances you might be caught in a bootloop when your unit reboots. If so, don’t worry. Just press the appropriate buttons to get back into Clockwork recovery and flash the appropriate zip files again. It may take a couple of times to correctly install. If it doesn’t correct the bootloop, boot back into recovery, perform the wipes again, then restore your backup from the menu. This will at least take you back to square one so you can do some reading on how to proceed from a bootloop error.
Remember, no matter what happens it is almost impossible to completely jack up your tablet. So have no fear.
If the install took and you successfully logged into your account and Market, then have at it and start playing…