For those who have a rooted Samsung Galaxy S3 (SGH-I747) from AT&T and basically having issues updating to the official Android 4.3 Jelly Bean that has been rolled out and comes with firmware build number I747UCUEMJB via OTA and or Kies, then this method is just created for you. Below is the original stock OTA update MJB that can be flashed through stock recovery and by installing thhis stock firmware this will restore your Galaxy S3 I747 to official AT&T firmware and will also upgrade to 4.3. Warning: This will update your bootloader, so proceed at your own risk!!! The update will also wipe all your data! If your Galaxy S3 is currently runs on 4.1.2 I747UCDMG2 (no root or rooted) 1) Download the Stock OTA Update 4.3 I747UCUEMJB from here: I747UCUEMJB Download - http://www.androidfilehost.com/?fid=23212708291680243 2) Copy it to your external SD card. 3) Reboot recovery, then navigate down and choose "install update from SD card". Press and hold Volume Up,...
