My friend lost her 3Gs so her mom gave her the old iPhone. Now she needs to unlock the phone to be able to use it. We've gotten as far as updating it from 1.1.2 to 3.1.2 and jailbreaking it using blackra1n. We've got cydia installed and we're trying to download bootneuter. However, the baseband of the phone is 04.05.04_G. Most of the guides I've read mention that it has to be the 05.07.11 baseband. How do we unlock this thing?