AT&T are offering LG's Optimus G to whoever is interested in it. To make things even more fun, we devised a way to update this device to JellyBeer v4.33 Android 4.2.2 JB custom ROM in a very easy manner. With this firmware, you will have all the right tools to expect a superior performance from your handset, to customize it and so on. 

Requirements

Hop on the train ride which will end when your device is finally updated. The very first stop for now is made of the following pre-requisites:

  • download the JellyBeer build 4.33 ROM (JellyBeer-v4.33-27072013-032037-geeb_att_us.zip) together with Google Apps (gapps-jb-20130301-signed.zip) on the laptop you've bought
  • charge the phone's battery
  • flash USB Drivers for the LG Optimus G on your laptop
  • create a backup 
  • make a NANDroid backup
  • use the bootloader and carrier unlocked smartphone
  • enable USB Debugging on your handset.