Before you decide to update your Stock OS read this first. This doesn't mean you can't load a custom ROM but it adds steps to loading a custom ROM if you are on Stock 4349.
From Gojimi a post from another forum.
ATTENTION - IF YOU ARE ON STOCK 4349+ or any MOD BASED OFF 4349+ USING THE NEW RECALLED BOOTLOADER! READ PLEASE!
Starting with the most recent but recalled update to Tap N Tap Viewsonic has introduced a new Bootloader being called the 1.2 bootloader. This bootloader is not compatible with mods or Roms based off of the Viewsonic Current Bootloader being called the 1.1 bootloader! This bootloader provides absolutely no known advantage other than being able to boot any new STOCK kernels. If you would like to use any of our stable ROM's (i.e. Vegan 5.1.1, Vegan GingerEdition and currently CM7) using Viewsonics currently supported and shipping bootloader (1.1) you must Downgrade your bootloader and TNT Version before you flash a new kernel or a new ROM
Please download the following downgrade update.zip and place it on your sdcard renaming it to "update.zip".
http://www.gtabdevs.com/releases/4349_Downgrade.zip
Then power down your device. And power back up while holding the power button and vol + till your display says "recovery key detected" in the top left corner.
Using the volume keys to navigate up/down in the menu highlight "Apply Internal update.zip" if you copied the update.zip to the internal memory or "Apply External SDCard update.zip" if you happened to place it on an external SDCard and then inserted it before booting to recovery. Now select the menu choice using the menu key.
This process will take a few minutes. You will see a Box with an arrow and a progress bar while it applies the update.... when it is finished it will reboot to make the changes. Once the changes are complete your tablet will boot into Tap N Tap version 3588 (cringe).
You are now free to follow all the tutorials about installing CWM and/or Kernels/Roms.
Thank you and good luck.
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From Rothnic ( another dev)
[INFO] The 1.2 Dev Branch Bootloader is NOT Locked Roebeet and I have confirmed that the 1.2 bootloader is not locked, it just has changes that other devices have gained before the Gtablet. The 1.2 bootloader is compatible with pershoot's Zpad kernel and Adam kernels. The newer bootloader causes older kernels to fail because it requires extra voltage levels from the bootloader. Check out Pershoot's Zpad option here: https:// github.com/pershoot/gtab-263...82ea36d58fc68a The Gtab can run Pershoot's Zpad kernel on the 1.2 bootloader. This means that the Zpad and Adam's bootloaders were from a newer branch of Malata's internal smba1002 kernel repo. If any future Gtablet or Adam kernels come out past 2.6.32, they will most likely be incompatible with the 1.1 Gtab bootloader, so it is best if people start moving ROMs on to 1.2 to prepare. We know that Notion Ink has Malata working on a post 2.6.32 kernel. I know Roebeet is updating his mods to run this new setup so watch out for them
From Gojimi a post from another forum.
ATTENTION - IF YOU ARE ON STOCK 4349+ or any MOD BASED OFF 4349+ USING THE NEW RECALLED BOOTLOADER! READ PLEASE!
Starting with the most recent but recalled update to Tap N Tap Viewsonic has introduced a new Bootloader being called the 1.2 bootloader. This bootloader is not compatible with mods or Roms based off of the Viewsonic Current Bootloader being called the 1.1 bootloader! This bootloader provides absolutely no known advantage other than being able to boot any new STOCK kernels. If you would like to use any of our stable ROM's (i.e. Vegan 5.1.1, Vegan GingerEdition and currently CM7) using Viewsonics currently supported and shipping bootloader (1.1) you must Downgrade your bootloader and TNT Version before you flash a new kernel or a new ROM
Please download the following downgrade update.zip and place it on your sdcard renaming it to "update.zip".
http://www.gtabdevs.com/releases/4349_Downgrade.zip
Then power down your device. And power back up while holding the power button and vol + till your display says "recovery key detected" in the top left corner.
Using the volume keys to navigate up/down in the menu highlight "Apply Internal update.zip" if you copied the update.zip to the internal memory or "Apply External SDCard update.zip" if you happened to place it on an external SDCard and then inserted it before booting to recovery. Now select the menu choice using the menu key.
This process will take a few minutes. You will see a Box with an arrow and a progress bar while it applies the update.... when it is finished it will reboot to make the changes. Once the changes are complete your tablet will boot into Tap N Tap version 3588 (cringe).
You are now free to follow all the tutorials about installing CWM and/or Kernels/Roms.
Thank you and good luck.
[/SIZE]
From Rothnic ( another dev)
[INFO] The 1.2 Dev Branch Bootloader is NOT Locked Roebeet and I have confirmed that the 1.2 bootloader is not locked, it just has changes that other devices have gained before the Gtablet. The 1.2 bootloader is compatible with pershoot's Zpad kernel and Adam kernels. The newer bootloader causes older kernels to fail because it requires extra voltage levels from the bootloader. Check out Pershoot's Zpad option here: https:// github.com/pershoot/gtab-263...82ea36d58fc68a The Gtab can run Pershoot's Zpad kernel on the 1.2 bootloader. This means that the Zpad and Adam's bootloaders were from a newer branch of Malata's internal smba1002 kernel repo. If any future Gtablet or Adam kernels come out past 2.6.32, they will most likely be incompatible with the 1.1 Gtab bootloader, so it is best if people start moving ROMs on to 1.2 to prepare. We know that Notion Ink has Malata working on a post 2.6.32 kernel. I know Roebeet is updating his mods to run this new setup so watch out for them