With Apple pushing out the latest version of iOS, taking the current release to 5.1.1, users are once again split right down the middle, thinking whether or not they should update to the latest firmware. On one side of the fence are the everyday users who use their iPhone without any modifications, but on the other side are the jailbreakers and unlockers who are always understandably hesitant when the update notifications come through.

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.

Folks who rely on carrier unlocks using Ultrasn0w will be happy to know that its developers have just released an updated version of it which supports the final release of iOS 5.

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.

Interesting developments in the world of iPhone unlocking today, with the news that the controversial GEVEY SIM continues to unlock iPhone 4, even when updated to iOS 4.3.4.

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 SIM is a hardware-based unlocking method for iPhone 4 which works with most basebands. Today, we received a tip from a reader who has tested Gevey SIM on iOS 5… and it works!

Yes you read that right! The same source who earlier provided us with screenshots of iPhone 4, unlocked to work on T-Mobile US using Gevey SIM has just provided us more proof to confirm that it can also unlock iPhone 4 on the latest iOS 4.3, Baseband 04.10.01.