Running a Rom Update Utility (RUU) on the HT… | AT&T, Rogers HTC One X, Telstra One XL | XDA Forums
1. Download the RUU file you need. It will be an exe file (remember what I said above about S-On and S-Off.) http://forum.xda-developers.com/show...php?p=37227608 or http://androidruu.com/?developer=Evita 2. Backup all your files you wish to keep and make...