I'm looking to go from pb 3 to the official 9.0 release today, but i haven't been able to back up to icloud in a few months...looking to create a workable backup that'll work on the official 9.0 in case something happens when upgrading OTA. Should I backup to the computer? Will this work on the official 9.0? Also, can I just remove the Public Beta profile from my phone in order to see the official 9.0 show up in the software update section in my settings? Or do I need to unenroll in the program fully?