Apple N Berry has announced that the Gevey Ultra S can unlock your GSM iPhone 4S on iOS 5.1.1.
Good news! If you are currently using GEVEY Ultra S GSM to unlock your GSM iPhone 4S on iOS 5.1, you CAN upgrade to iOS 5.1.1
Overview:The GEVEY Ultra S GSM unlocks your GSM iPhone 4S. It's a true plug-and-play unlock for GSM iPhone 4S running iOS 5.0, 5.0.1, 5.1 and 5.1.1. The GEVEY Ultra S is a thin microprocessor that sits between your network SIM card and the base-band hardware, allowing you to use your GSM iPhone 4S on all worldwide GSM networks.
You can purchase the GEVEY Ultra S from the link below for $39.99. Take a look at how to use it in our video below...