got u broN0 UNTETHERED..jailbreak yet for ios 6.1.3..
Use redsn0w for tethered jailbreak only for iphone 4
Your options are limited , if you were lucky to save shsh blobs then downgrade to 6.1.2 or 6.0.1
otherwise sit and wait for coming Untehered jailbreak of 6.1.4....
:rapture: