How to Upgrade a Rooted T-Mobile Galaxy S3 to Official Jelly Bean T999UVDLJA

Samsung and T-Mobile has now officially release its Android 4.1.1 Jelly Bean update for T-Mobile's Samsung Galaxy S3 SGH-T999. The firmware build T999UVDLJA and is now available via OTA (over the air) and Samsung Kies software server. To those among of you who have a rooted or with installed custom ROM on your devices can't get this update anymore since such devices OTA and Kies ignores you from updating. Below are the methods on how you can upgrade to official T999UVDLJA and enjoys its new features like the Google Now, All Share Cast sharing, Blocking Mode option and many more performance and enhancement added.

How to update Jelly Bean T999UVDLJA if my Galaxy S3 has been rooted and running custom ROM

A: Install UVDLJA Update via CWM/TWRP custom Recovery

If you currently rooted and runs with a custom recovery, you don't need to worry. You can still install this update via recovery procedure. Grab  Wildchld,  stock T999UVDLJA deodexed file, which can be flashed directly via CWM or TWRP custom recovery. Follow the details here on  XDA-original thread.

For those who wants a clean T999UVDLJA stock ROM and wants to start a fresh firmware, unmodifed, unrooted or just a full stock. You can grab the Odin flashable stock ROM and then manually flash it straight to the device. There are two options to do it, here's how.

B: Restore Back from original ICS 4.0.4 firmware and then update thru OTA UVDLJA

Reverting back to ICS will wipe your device modification like Root and the customized ROM. Follow this guide here on how to restore back your Galaxy S3 to its original ICS firmware
http://smartphonefix.blogspot.com/2012/06/how-to-return-back-samsung-galaxy-s3-to.html
Once the original ICS is already installed, you may then now run your device thru OTA update.
 Go to> Settings>About>Software Update.

C: Directly flash the official Jelly Bean T999UVDLJA Stock ROM

On this method, you don't need to revert back to ICS but directly installs the T999UVDLJA Stock ROM. Follow this guide at Androidromupdate.com on how to manually flash using Odin.