Samsung looks to have quite a few leaks in their product upgrade ship, with the Samsung Galaxy S III GT-i9300 having multiple Jelly Bean OTA leaks in the last week. Now, the T-Mobile SGS 3 (SGH-T999) now gets to profit from them as well. The leak is an incremental OTA update, which means that you will need to be on stock T999UVALH2 before applying the file. The instructions from XDA Senior Member LuffarJoh are:
1. Download and install stock (if you are not already on stock rom) This is needed as a base. The update will otherwise fail
2. Download OTA
3. Apply zip in recovery menu
4. Enjoy Jelly Bean 4.1.1
Note that you will lose root. If you are concerned about that, you should wait until the talented developers at XDA put something together for you. Visit the original thread for information on where to download the OTA and to join in on the discussion._________
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