Recently iPhone Dev team has been released an update regarding to the redsn0w, which is a jailbreak tool now modified as Redsn0w 0.9.10b5c for windows and Mac OS X, but this update will not support the jailbreaking of iPhone 4S and iPad 2 Untethered. The last version of redsn0w 0.9.10b5c can only used for jailbreaking the iOS 5.0.1 and iOS 5.0 on iPhone 4, iPhone 3GS, iPad, iPod Touch 3G & 4G...