I am trying to jailbreak and unlock my iPhone 3GS 8GB iOS5 BB05.16.05 by following this link http://www.howtoarena.com/unlock-iphone-3gs-ios-5-baseband-05-16-05/ When i tried to restore firmware 4.1 under DFU mode, the restore freezes. The progress bar on iTune and iPhone doesn't move at all. Why? Can somebody help ---------- Some has claimed that this problem is due to wifi sync. I have uninstalled it but the problem still there. Can please someone help?