Apple has blocked iPhone 4 unlock with GEVEY interposer SIM, earlier today Apple seeded iOS 5 beta 2 to developers with some minor changes which also included this. Musclenerd from iPhone-Dev team has confirmed that the hole has been patched and Gevey SIM won’t work with iOS 5 beta 2.
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In a tweet today he said :
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If you rely on unlock we strongly recommend you not to upgrade to iOS 5 beta 2. Gevey’s SIM Interposer was able to unlock the iPhone 4 by force activating the baseband using the emergency dialer. This hole was not patched in iOS 5 beta 1 release and Gevey SIM worked perfectly.
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Apple could’ve waited for the final release but they didn’t and i believe GEVEY won’t try to release another version of Gevey interposer SIM. They most probably will wait for the final release of iOS 5 which is scheduled this fall.
Gevery SIM supported following basebands:
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In a tweet today he said :
it’s surprising Apple closed Gevey interposer hole in b2 rather than waiting until final (maybe they were under pressure)

If you rely on unlock we strongly recommend you not to upgrade to iOS 5 beta 2. Gevey’s SIM Interposer was able to unlock the iPhone 4 by force activating the baseband using the emergency dialer. This hole was not patched in iOS 5 beta 1 release and Gevey SIM worked perfectly.

Apple could’ve waited for the final release but they didn’t and i believe GEVEY won’t try to release another version of Gevey interposer SIM. They most probably will wait for the final release of iOS 5 which is scheduled this fall.
Gevery SIM supported following basebands:
- 02.10.xx
- 03.10.xx
- 04.10.xx
- 05.14.xx
- 05.15.xx
- 05.16.xx
If your baseband is mentioned in the list above we strongly recommend you to stay away from iOS 5 Beta 2 as it’ll lock you iPhone4 and you won’t be able to use it for cellular services.
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