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Apple has blocked the hole used for iPhone 4 unlock using GEVEY SIM in the latest software update AND GEVEY SIM was a hardware based solution and in fact the only solution to unlock iv4 device on higher basebands, which is not able to operate by software based solutions like Ultrasn0w. Developer MuscleNerd notes that Cupertino’s blocking action could have been due to pressure from outside, probably carriers and the guys over at Gevey need to update their SIM too to bypass the future iOS 5, if Apple plans to stick with the blocking………..

Gevey SIM Unlock solution for iPhone 4 has been blocked by Apple in iOS 5 beta 2 and works fine on iOS 5 beta 1, but MuscleNerd of the Dev-Team has confirmed that Apple has patched the exploit used by Gevey SIM to unlock iPhone 4:

It means that Apple have closed the hole which allowed the GEVEY sim to unlock the iPhone 4 and therefore the current GEVEY sim will only work wil iOS 5 Beta 1. For those unfamiliar, Gevey SIM Interposer is a hardware solution for iPhone 4 unlock, a SIM interposer sits between the SIM card and the Modem to perform a classical MITM. Gevey SIM interposer should always stay in-between SIM card and the iPhone modem in order to stay unlocked. Now that the Gevey SIM and Gevey Ultra SIM unlocks have been blocked, the only way to unlock iPhone 4 is to stay on iOS 5 beta 1 (which is destined to expire within a few weeks) or downgrade to iOS 4.3.3/4.3.x and then you can use Gevey SIM Interposer to unlock it. Gevey SIM can unlock iPhone 4 on baseband 01.59.00, 02.10.04, 03.10.01, and 04.10.01. Gevey will surely try to fight back and release an updated Gevey as soon as iOS 5 final firmware hits masses and for those depending on Gevey SIM unlock are suggested to stay away from iOS 5 beta until Gevey confirms the compatibilty with iOS 5.

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