[T-Mobile LG G2x] TGA_Gunnman:
Getting Started Modding Your T-Mobile G2x

This is a Tutorial to assist new users on how to get up and going on a new ROM.

This tutorial is all based on you having a PC and an x64 or x86 based OS.

Please do not ask questions as I will not be supporting this tutorial. Post questions in G2x Q&A or the following linked XDA threads (Read instructions first please in the below linked threads).

Please follow the below steps in order.

Step 1

Root your Phone (for Froyo 2.2.2 only, or you can just skip this step and go to Step 2 if you intend on flashing a ROM straight off):

http://xdaforums.com/showthread.php?t=1039985

Step 2

Flash ClockworkMod Recovery via NvFlash (You can use ROM Manager to install ROMS but CWM is not persistant unless you NvFlash it.):

1. Use the One-Click NvFlasher to flash the Clockwork Mod Recovery of your choosing (external or internal supported SD card)(Which will be persistent at bootup).

http://xdaforums.com/showthread.php?t=1056847

2. In your O/S install ROM Manager and once again choose to flash Clockwork Mod Recovery (which will NOT be persistent at bootup, but you can get to it through the O/S only using ROM Manager).

So Basically, I use ROM Manager to update my CM7 nightly build and I use the recovery that gets fake flashed by ROM Manager.

I have the NvFlashed Recovery standing by when i want to do a Nandroid Backup/Restore or want to flash roms that are not in ROM Manager or Mount my SD Card from recovery, recover from a bad flashed ROM, etc...

Step3

Perform a Titanium Backup or My Backup Pro of your Phone (you can skip this step if you prefer, and go to Step 4.):

1. Install Titanium Backup or My Backup Pro from Android Market.

2. Backup all of your apps.

3. Copy the "Titanium Backup" Directory from your internal SDCard to your External SDCard.

Step4

Perform a Nandroid Backup of your Phone (Optional but suggested before you flash any ROM or make any O/S changes):

1. Bootup to NvFlashed Clockwork Recovery using the button method.

2. Choose backup/restore and run a backup.

3. This will save the backup to your internal or external SD Card depending on which version of CWM you selected in the One-Click App.

Step 5

Download a ROM and place it on the SDCard that you have ClockworkMod Recovery support for (see step2 link) and flash the ROM by booting into ClockworkMod Recovery using the button press method:

http://xdaforums.com/showthread.php?t=1048274 = NANDROID Restore Stock LG-P999-V10f Froyo 2.22 (Stable)

http://xdaforums.com/showthread.php?t=1080045 = Bionix 2 / Gingerbread 2.3.3 (Stable)

http://xdaforums.com/showthread.php?t=1054335 = Eagles Blood / Gingerbread 2.3.3 or Froyo 2.2.2 (Stable)

http://xdaforums.com/showthread.php?t=1096461 = Dark and Sinister Froyo 2.2.2 (Stable)

http://xdaforums.com/showthread.php?t=1066261 = Gingerbread Leak LG-P999-V20c Gingerbread 2.3.3 (Stable)

http://xdaforums.com/showthread.php?t=1058131 = CyanogenMod7 Nightly / Gingerbread 2.3.4 (Stable / Work In Progress) (My Daily Driver)

http://xdaforums.com/showthread.php?t=1068367 = Faux AOSP / Gingerbread 2.3.4 (Stable / Work In Progress)

Plus Many More......

Check the Development thread for all the available ROMS.