Alright, I've had my Galaxy S3 i747 for a couple months now, and I bought it off a random guy on craigslist. Nothing is wrong with the phone don't get me wrong, but he put a custom ROM on it and I CANNOT GET IT OFF, and I can't put anything new on. I've desperately tried everything and I don't know what to do. It may be something to with my about phone menu. It says I have a Galaxy Nexus and not Samsung Galaxy S3. The About Phone menu looks like this: Software Update Status Legal Information Model Number Galaxy Nexus Android Version 4.0.4 Baseband Version I747UCLG1 Kernel Version 3.0.8-704434-user se.infra@SEP-72 #1 SMP PREEMPT Wed Jul 4 12:40:58 KST 2012 Build Number DIET ICS! I747 v8.08.12 Can anyone help me please? I'm just trying to get a jellybean rom so I don't have to wait forever for At&t to release it.