Hello. Due bad experiences updating devices as the iPhone 3g, i have keep the factory iOS in all my devices. anyway, i have doubts to update my iPad 2 with iOS 5.1 to iOS 7.1. My tablet is super fast, though in the last few months, when i'm browsering, i have been suffering a lot sudden exits of the safari. ¿Is this worst in 7.1? ¿What do you recommend me to do? Thanks.