After the release of untethered iOS 7 jailbreak tool, iH8Sn0w and winocm has released an untethered jailbreak for iOS 6.1.3 and iOS 6.1.5 for iPhone 4, iPhone 3GS and iPod Touch 4G. The untethered iOS 6.1.3/6.1.5 jailbreak has been released as a Cydia package named: p0sixspwn.