Hey guys! If you're trying to update from iOS 7 Beta 3 to Beta 4 and you're getting a "Your software is up to date." or 'Unknown Error' error? Note: This isn't necessary if you're iOS device can find the update OTA. You only have to follow these steps if the Software Update screen constantly says "Your software is up to date." Download iTunes 11.1 (beta 1) from Apple's Developer Centre Install & Update iTunes Download iOS 7 Beta 4 for your device also from the Apple Developer Centre Plug in you're iOS device, select it from the 'Devices' list in iTunes Hold the 'Option' / 'Alt' key on your keyboard and click "Update" Select the approipate iOS 7 Beta 4 IPSW file Let iTunes update your iOS 7 device Hopefully that helps you guys with problems updating to Beta 4. Enjoy!