OTA - iPhoneHeat

iOS 5 Beta 4 Blocks OTA Updates on Jailbroken iPhone, iPad, iPod Touch

The latest iOS 5 beta 4 comes with Over-the-Air (OTA) iOS firmware updates for iPhone, iPad and iPod Touch. If you’re running iOS 5 beta 3, you can easily download and install iOS 5 beta 4 OTA without connecting to the iTunes. However, if you’re jailbroken, you wont be able to update iOS over-the-air.