GEVEY’s Ultra S is one of the most popular tool to unlock the handset, if you have used the unlock tool or are planning to use it then you will be pleased to know the SIM interposer works with the new iOS 5.1.1 update as well.
The update is a tad problematic for jailbreakers but it is completely safe for unlockers, so there is no harm in updating to iOS 5.1.1. Online retailer ApplenBerry announced the news via its official Twitter account, it stated “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.″
The unlock tool is compatible with GSM iPhone 4S only. Also note that you have to dial 112 if you are using GEVEY Ultra S which is illegal in many countries. Anyways it’s a great option to unlock your GSM model of iPhone 4S so if you are looking forward to get it, the SIM interposer is available for $39.99 at ApplenBerry’s online store.
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