I need help. My friend upgraded me to iOS 5 as a joke, and since I'm a developer it was harmless. The upgrade was smooth, according to him. Now I'm stuck with a buggy OS on my main phone, and I don't want it on there! After looking around, it seems like it should be easy to downgrade. It's not. I tried everything I could think of. I tried to restore it using iTunes 10.5b3, and 10.3. In both versions I also tried restoring when the phone was in DFU mode; again, no luck. I'm really running out of options. Any ideas?