AT & T and LG officially announced that the Android Jeally Bean (Software Version: E97020J) for the AT & T LG Optimus G is now available.
[update] Those who are looking for AT & T LG E970 LG Optimus G stock rom / firmware can grab it from this link
starting from April 4,AT & T LG Optimus G owners will be able to download the Android 4.1 (Jelly Bean) update for their smartphones.
You can update the software from their phones with a Wi-Fi connection. To do so, pull down the notification panel, select Settings>General>About phone>Software Update>Update now and follow the prompts.
Visit http://www.android.com/about/jelly-bean/ to lean the new features included in Android 4.1 Jelly Bean Operating system.
Visit AT & T Official http://blogs.att.net/consumerblog/story/a7788939 for the appealing enhancements packed inside Android 4.1.2 Firmware Update (E97020J)