And now iClaried has released the easiest way to unlock iPhone 4S, 4, 3GS on any baseband running on iOS 5, 5.0.1, 5.1 and they have posted a tutorial video for us to follow. Therefore if you prefer seeing the video in regard of following tutorial rather than texts. Then this one is exactly serving your need. Therefor lets watch the video!
Hope you find this post useful and see you again in another posts!