If you are a Tmobile G2 user and thinks of upgrading or debranding your Tmobile G2, you should familiarize yourself with these terms: Upgrading or Downgrading, Debranding and; Breaking.

Breaking: this means getting your Android device permanently stocked at start-up. This usually happens when debranding your Android device and sometimes;during up-grade and Down-grade processes.

Debranding: As in the case of HTC Desire/Tmobile G2.
HTC made customized ROM of HTC Desire for Tmobile. And this is the reason why the HTC Desire Z is porpularly known as the Tmobile G2.

However, if you wish, you can replace the original ROM made by HTC with the customized ROM of the Tmobile G2 - and that's called DEBRANDING!

To upgrade your Android phone is to install a newer version of the previous OS installed on the phone so that the phone may support more applications better and feature more utilities.

However, if your phone seems to be unsupportive of the new development, you may down-grade it.

How to Safely Debrand, Upgrade Or, Downgrade your Tmobile G2/HTC Desire Z:

1- while the phone is on, go to Menu <<>> Settings <<>> Applications <<>> Development and from here. set USB Debug to ON.

2- Switch off the phone by pressing and holding the POWER button.

3- Switch on the phone into HBoot Options by pressing and holding both the Power and Volume Down buttons together.

4- Once the phone is turned on, scroll to the Fast Boot option and select.

5- On the page that displays next, scroll down to the Reboot Bootloader option and select it

5- Now, attach the compaible USB cord/cable for your phone to the PC; Laptop/Desktop USB port, then, connect the other end to your phone.
6- Now, if you have a copy of the HTC Desire ROM'S .EXE Setup file on your system, navigate to the folder in which you have it saved and double-click on it. In about a minute or two, the RUU, ROM Update program would be lunched.

7- Now, just follow the instructions as may be displayed by the RUU program untill the update is successfully completed.

To download all the programs and files you need to Update or Debrand your Tmobile G2, visit the source page here: http://www.arykblog.com/2013/08/htc-desire-gt2-debrand-upgrade-downgrade.html