The ultrasn0w Dev-Team has been working round the clock and can now say that version 1.0-1 of ultrasn0w in Cydia will now work on the iPhone 4, as well as the 3G and 3GS. Beware, you download and install at your own risk, and always make certain to fully back up your Apple smartphone.
For those who have a little understanding when it comes to jailbreaking your iPhone, then this video below will come in very handy and guide you through the process of unlocking your handset. Just watch it and you will see just how easy it is — well that’s what Thomas Ricker from Engadget says.
In the video the guy says unlocking your Apple iPhone 4 is a really simple process, your handset needs to be jailbroken first. You then have to type in JailbreakMe.com, you then have to slide to jailbreak, and make certain that you are running software less than iOS 4.1 for this to work.
Things start to get a little technical from here, so make certain that you follow the steps correctly. Did this unlock work for you?