JailBreak Xpert is the newest jailbreak untethered tool for ios 6.1.3/6.1.4. JailBreak Xpert is also Untethered Jailbreak which makes it very usefull!
JailBreak Xpert can jailbreak any Apple devices (iPhone 3G, iPhone 3GS, iPhone4, iPhone4S, IPhone5, iPad 1,2,3, iPod 1G,2G,3G,4G and Apple TV).
This is the easiest way to do untethered jailbreak for ios 6.1.3/6.1.4. Many other jailbreaking tools are very complicated to use and some are very risky to your iDevices and may cause bricking.This is a very safe untethered jailbreak for your ios 6.1.3/6.1.4 idevice.