Im not trying to unlock because I am on AT&T and I do not need to hackitivate my iPhone.
However, I was reading that it was an issue with b4 and b3 and that b5 fixes this issue, but I do not have internet and that is a problem because if I use the 4.0.1 software to jailbreak iTunes wont let me restore without verifying **** with Apple.
But I might try it just for fun because I will have internet in a few days and if I can't restore oh well.