Walter wants to downgrade to iOS 7 but Apple says he can't. Leo says that's right. There's no going back. There used to be a loophole to restore to iOS 7, but it won't work because Apple stopped signing iOS 7 and he won't be able to activate it. Leo does recommend talking to a Genius at the Apple Store. They may know some "secret sauce." Otherwise his only option may be to jailbreak it.