Redsnow 0.9.15b3 download – Free Jailbreaking Tool!
If you are keep trying to jailbreak 6.1.3 iOS version with the Evasi0n tool, you will keep hitting a wall. You can achieve a jailbreak of iOS 6.1.3 with a free Redsnow 0.9.15b3 download from the iPhone Dev-Team blog.