New Untethered Jailbreak Vulnerability Discovered for iOS 4.2.1 / 4.3Taimur Asad·January 30, 2011Pod2g, the guy behind SHAtter and the untethered iOS 4.2.1 exploit for GreenPois0n has discovered yet another vulnerability in iOS for iPhone, iPad and iPod touch which can possibly be used on iOS 4.2.1 and 4.3 as well.