On Tuesday iH8sn0w released the first version of sn0wbreeze that allows users to do untethered jailbreak on iOS 4.2.1 and then unlock if they have a decodable baseband. I know many of you rushed to use this new version of sn0wbreeze by following my tutorial, but I noticed that some had a certain problem with unlocking the terminals after using sn0wbreeze. Apparently ultrasn0w either doesn't do the decoding properly or it does but the signal from the terminals fluctuates or the signal is much weaker than it was before. In certain cases, after decoding, the terminal does not recognize the card or recognizes it but does not "catch" the signal.
I don't know what exactly causes this problem, I don't think iH8sn0w knows, but to solve it you have to restore either to a custom ipsw made on Mac if you need to keep the baseband intact, either restore to iOS 4.2.1 and update the baseband. This was the only method to solve the problem, at least the only one discovered by me so far. If you know other solutions, please leave the method in a comment.
Today there is a new version of sn0wbreeze, you can try to make one custom ipsw using it, but I don't know if you will solve the problems or not.
