Apple N Berry annoumced that Gevey Ultra s can also unlock the iPhone 4S running iOS 5.1.1. As of now, Gevey SIM is the only solution to have the iPhone unlock with the latest Apple iOS firmware with out having to jailbreak your device.
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.
GEVEY Ultra S GSM is compatible with the iPhone 4S and following firmwares:
GEVEY Ultra S is a small microprocessor that is between the baseband hardware and the SIM card sits. This cut makes sure that your every SIM card, regardless of which provider you use in your iPhone 4S. Free is of course not, but you can often do without fuss update to the latest firmware, unlock methods with something like ultrasn0w not possible.
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