Over the last day or so the unlocking aspect of the jailbreak community has seem to hit a red hot patch, with potential unlockers first all being introduced to a new method of iPhone unlocking using a procedure which takes advantage of Sam Bingner's Subscriber Artificial Module (SAM), and now we have the news that the latest GEVEY Ultra 5.1 now supports the GSM iPhone 4 running iOS 5.1 with modem firmwares up to 04.12.01.
The jailbreaking of an iPhone is an art which appeals to a diverse group of people for a number of different reasons. Some people genuinely and strongly disagree with Apple's tight hold over the operating system, some individuals love the freedom to be able to install previously unavailable tweaks, modifications and themes while others need to perform a jailbreak as an intermediary stepping stone to achieving a network unlock to use the device with any carrier.
With every iOS update released, attentions quickly turn to the hacking community to see what the state of play is regarding jailbreaking and unlocking. As was the case with the previous security update released by Apple some 12 days ago, you can still unlock your iPhone 4 running 4.3.5, but it will require purchase of the controversial yet effective Gevey SIM in order to work.
If you've been a regular reader of this site, you're probably aware of GEVEY SIM, a custom SIM card used to permanently unlock iPhones. We recently featured a tutorial on how to unlock iOS 5 Beta 1 using this method, yet Apple had reportedly made this method impossible in Beta 2. It turns out that an unlock is still possible using a slightly different method.
GEVEY Ultra is a new iPhone 4 unlock SIM that doesn't require dialing 112 emergency number. All you need is this custom SIM card and 15 minutes of your time to have your iPhone 4 permanently unlocked, on any baseband, running any firmware, up to iOS 5!