So, just got off the phone with At&t tech support, they knew nothing of the update for enabling "Unknown Sources" until they contacted HTC. All they say they knew was that update; 1.84.502.11 would be pushed to all selected devices, however, that update is on my phones when you go to Menu/Settings/About phone/Software information/Software number. They said that is the OTA update which enables HSUPA. The email going around Customer Care/Tech Support at At&t states that the "enable Unknown Sources" update is scheduled to be launched as a "push update" from 5/16/2011-5/23/2011. If for some reason you dont receive it by the 23rd, then Tech support is instructed to send it to you manually, you just have to call them and tell them that you haven't received it yet. They were going to manually update mine tonight but apparently the only person in Tech Support that can access a program called "Cross Device Update Manager" is not there tonight, so once again promised that it would be done for me tomorrow afternoon, but they also said it could take anywhere from 24-72 hours for it to get sent to me once they put in the order. I know it's hard for some of you, but you can stop trying to manually check for updates in your "At&t Software Update" file, you will only keep killing your hopes and dreams that on of those times you will magically see it there, not going to happen. When your time comes, just keep checking Menu/Settings/Applications/Development/ when you see "Unknown Sources" at the top of the list, then you'll know that your time has finally come. It wouldn't hurt to turn your phone off/on once in a while, sometimes that's what it takes for the update to finish loading once it's sent to you. Remember, if At&t hasn't left you something in your stocking by the 23rd, call and speak to Tech Support at: 611 on you mobile or if your an insomniac you can call them after hours at 866-801-3600. Don't let At&t get the best of you, it will all work out, I'll do whatever it takes to help the masses get everything we deserve. Remember, WE are the ones with the power, not them, without us they wouldn't exist, stand tall and demand what is entitled to you.