iOS 5 Over-The-Air Update Stuck with Jailbroken Devices
Earlier today, Apple has released iOS 5 beta 4 to developers for iPhone, iPod touch, iPad and Apple Tv. As we reported you that Apple has introduced OTA (Over-the-Air) feature which allows you to download iOS update directly to your iOS device without using iTunes. Unfortunately jailbroken device can't use OTA feature.
Today MuscleNerd of iPhone dev-team has confirmed that OTA update won't work on jailbroken devices due to an explicit check of Applications. MuscleNerd didn't give any other details, but I think this is a new challenge for iPhone dev-team.