unlocking iphone

[mrwoooooooo]

ok so work gave me an iphone and said i could unlock it to use their sim.

I've jailbroken it with redsn0w but ultrasn0w doesnt do anything

ios 5.1.1
baseband 04.12.01

tips plzzz

(iphone 4)

[mrwoooooooo]

Yeah i know you read the thread. and you're all useless!

Edited by efq (Forum Moderator): Please don't post pointlessly, even if nobody has an answer!