In the latest beta version of iOS 5, Apple has blocked Applenberry’s Gevey SIM unlock, a hardware-based unlock solution for the iPhone.

Gevey SIM allows users to unlock an iPhone handset without jailbreaking. The “accessory” is a SIM-sized piece of plastic, which users insert into their smart phone along with a SIM card. After following a series of instructions, Gevey SIM can remove the carrier-lock from users’ iPhone handsets as if by magic.

However, in iOS 5 beta 2, the magic is over: Apple has blocked the exploit, as relayed by @MuscleNerd in a tweet that recently hit the Web:

it’s surprising Apple closed Gevey interposer hole in b2 rather than waiting until final (maybe they were under pressure)

Obviously, Applenberry could release a new piece of unlocking hardware (providing they can come up with one). Alternatively, the iPhone Dev-Team will likely release a software-based unlock solution (“ultrasn0w”) once iOS 5 is released. However, one of Gevey SIM’s greatest appeals was that it allowed users to unlock iPhone handsets jailbreak-free.

Do you use Gevey SIM with your iPhone? Let us know in the comments.

[via The Gadgets]