Blacksnow (Blacksn0w) Unlocks iPhone 4.0 (iOS 4.0) Firmware
Blacksn0w has been updated by msft.guy to unlock iPhone OS 4.0 (iOS 4.0). The baseband needs to be preserved and can only be done if you’ve used PwnageTool to jailbreak. It is very buggy and should not be used by newbies. There is no Cydia installer and it has to be manually uploaded to iPhone…