No, not to add my UDID, but to check if it's in use/been added elsewhere? A developer (he's got apps on the store, so he is legit) is adding people, and says I've had my UDID added to his account and to "enjoy" iOS 5. The thing is that in return, I have to beta test some future apps ... fair enough. Thing is, if he's lying and I restore to iOS 5, I'm left with a brick that can't be activated, and that's just not happening. I've emailed him asking for a screenshot or confirmation of some kind, but nothing back. So is it possible for a Developer to check if my UDID is already registered, or can a UDID be added to more than one account? If it can't be done, I'm binning the ipsw and waiting until September.