This is fairly strange. iOS 7 beta has been out for almost three months now, but new reports are saying that iOS 7 beta is starting to cause iPhones to lock up, and force the users to roll back to iOS 6 in order to unbrick their devices. There is no official word on why it is happening, but there is a theory that Apple is cracking down on those who installed the beta using someone else's developer account...Source: http://www.phonearena.com/news/iOS-7-beta-reportedly-bricking-non-developer-iPhones_id46885
