Hi all, I am testing my application on IPhone / IPad device with IOS 5.0.1. But I need to make sure the application also running well in version 4.3.3. So is it possible to restore my IPhone / IPad devices to IOS 4.3.3? Or if the application running well in IOS 5.0.1 means that it also can running well in IOS 4.3.3? Am I required restore my devices to IOS 4.3.3? The restoration only available for jailbreak devices? Any ideas and comments are welcome and appreciated. Thanks a lot.