ohh EPiC FAiL
Quarry Creeper
He doesn't need to jailbreak it. If he just downloads the right image and does a selective restore it should be fine. It won't need to contact their servers.
i'm just saying use redsn0w and follow the directions to enter pwn DFU mode, not to jailbreak. he will select the 4.1 firmware just to get past the initial screen, then there is an option to enter pwn DFU mode which bypasses some of the apple restrictions and can also allow you to use a custom firmware.