MizzouBrent
Android Expert
Are you absolutely sure you're writing down the serial number? There are several numbers on the back of the phone. You want the one that has S/N by it. Sounds obvious I guess, but there was a guy on here awhile back that was not copying down the right number. Try copying your generated beta key and pasting it in instead of recopying. Several have had issues with it. I think OCN has mentioned a specific program he used to get it to take his beta key.