How can I jailbreak iOS 6.1.3 / iOS 6.1.4?
Sadly for those with iOS devices running iOS 6.1.3 and 6.1.4 there is no jailbreak solution available at this time. Apple killed the untethered 6.1.2 jailbreak found at evasi0n.com with the iOS version 6.1.3 firmware update. The development team responsible for the jailbreak software known as the evad3rs has decided to wait unti the launch of iOS 7 before releasing the next untethered jailbreak.
Prematurely releasing a jailbreak can reveal exploits in the iOS firmware that Apple will close, making future jailbreaks more difficult. For this reason, iOS 6.1.2 is the last mobile operating system that can be jailbroken at this time. Apple is expected to reveal iOS 7 at WWDC 2013.