I think you all are familiar of Gevey Sim. It helps unlock the iPhone based on iOS version. As we all know that Apple updated the version of iOS up to 5.1 in new iPad event a couple of days ago, so lots of people updated their version on it.
They were waiting for ultrasnow version to unlock their phone. For those people we found a way for Gevey Sim user to unlock their phone on iOS 5.1 version. It helps use unofficial carrier services on your mobile. First, you have to update your baseband because it only works on these baseband 4.10.01 – 3.10.01 – 2.10.04 – 1.59.00.
First if all you need to make a custom IPSW file using Redsnow 0.9.10b6, The method is exactly the same I had told you in the previous post related to tethered jailbreak of iOS 5.1 via redsnow 0.9.10b6 Read more..