Tried updating last night. Left it downloading and went to bed (with auto-sleep disabled). this morning I'm still on 4.1.2 and nothing happens when I hit Check for updates in AT&T Software Update. I don't even get the wait till later message. Changed date on phone but still get no response when I hit Check for Update. Restarted phone several times. Any ideas?
Bill, I did something similar to what you describe and also woke up to 4.1.2. However, once I backed out to the Updates screen, a dialog popped up saying an update had been downloaded and giving an install option. Maybe yours did not download, if you're not getting this option.
If you haven't gotten this message, I'd try the following: turn off auto-update date, make sure your phone is on wi-fi, well-charged, and plugged in. Reset your phone's date a day further than you did before, then restart your device. If this combination does not solve your problem, set the date one more day further ahead and restart, repeat. This is what triggered my update (three or four days), and hopefully it will help you get yours.
However, my wife's AT&T HTC One X would not update via AT&T Software Update. I called AT&T support, and they were clueless concerning Android versions and even the functionality of the update app. Eventually, I downloaded the software image (RUU) from HTC's site, but this essentially wipes your phone. Hopefully one of the above solutions or some other actions will help, and you won't have to resort to going this route.