A video clip
shows how to install Clockworkmod and Tnt Lite 4.2.0. The Clockworkmod v0.8 can be downloaded from
Tnt Lite 4.2.0 is in
Just follow the visual instruction, it is very easy to get both Clockworkmod and Tnt Lite 4.2.0 installed. Even a MicroSD card is not required. After installation, G-Tablet is already rooted. z4root is also not needed anymore.