After redsn0w 0.9.7b1, untethered iOS 4.2.1 jailbreak for iPhone 4, iPod Touch 4G, and iPad, now iPhone Dev Team has released redsn0w 0.9.7b2 and redsn0w 0.9.7b3 for iOS 4.2.1. All these latest redsn0w versions are for the testers and soon will be released to general public. Both redsn0w 0.9.7b2 and redsn0w 0.9.7b3 jailbreak for iOS
