Phone not updating

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http://forums.androidcentral.com – My sister got a brand new AT&T HTC One X for her birthday (the 14th) and the phone won't update to Jellybean 4.1. Every time I go and touch update it searches for a a little while and then just stops. No message or anything. Just nothing. I've tried everything (hard reset and check in, etc.) but nothing seems to work. (HowTos)