I am a registered iOS developer and downloaded and installed iOS 5 beta 1 and iTunes 10.5. Now after flashing the firmware on an iPhone 4 iTunes says
We're unable to complete your activation This device is not registered as part of the iPhone Developer Program. If you are a member of the Program, please register your device in the iPhone Developer Program Portal.
After reading that I added the device in the Provisioning Portal in the devices section. Still no luck. Can anybody help, please?