Virginizer

The iPhone-Elite Team Virginizer is a tool designed to rebuild the lock table in the seczone area, repairing/reverting the changes that anySIM 1.0x and others(Including iUnlock and hardware unlock) did. It re-lock your phone, allowing you to update to 1.1.1 and unlock with anySIM 1.1.

It doesn't work for IPSF, unless you have a full NOR dump.