Urgent unlock iPhone?

Question

iPhone

Welcome all!
There was such an unpleasant situation:
When the iOS 7 beta appeared with the ability to install it without a developer account, I immediately installed it. However, a little time has passed and the phone is blocked and requires that the UDID be added to the list of the developer account, therefore I ask you to help either roll back the firmware, or who does not mind adding my UDID to your developer account. I tried to rollback / update / rearrange the firmware in different ways - all attempts without success, both in normal mode and in DFU mode.
Thank you all in advance for your replies and help.

Answer 1

Thank you all, the issue is resolved, thanks to IvanFF and max475imus habrausers for their help in resolving the issue.
In addition, I want to note that for those who faced the same problem, adding a UDID to the developer account was not enough, the device refused to activate, calls to the support did not give anything. After adding the UDID, I had to transfer the phone to DFU mode and do a recovery. Updated to normal iOS 7 and after that restored phone from backup.

Answer 2

Udid in PM