Can I downgrade an iPhone 4 from iOS 6 to iOS 5.1.1 using iTunes if I have a 5.1.1 restore.ipsw file? I have watched this video on YouTube and was wondering if that works for downgrade. I dont need to ...
I know that an IPSW is an iOS firmware restore file. When you want to install a beta firmware, Apple ships these. This website stores all old iOS versions in that format. What exactly is in an IPSW ...