How hard would it be to upgrade to the GM when it becomes available? I know you do not need UDID registration so anyone can install it, assuming I have a friend to get the file from. Would the transition from GM to Public be smooth or would it be a pain? I just want to make sure I would not lose any data or risk anything going on with the phone
GM usually is the same as public, so you'd not have to go from one to the other.