How to jailbreak untethered 6.1.3 Guide: Visit The Site as Shown above in Video
-Download the evasi0n tool for ios 6.1.3 jailbreak untethered.
-Open the evasi0n jailbreak 6.1.3 tool
-First connect your iDevice to our pc/laptop windows or mac
-Make sure your iTunes is closed before proceding.
-Hit the jailbreak button and wait a few minutes.