For those experiencing "No Data" or "No LTE", or similar symptoms... Do this...
1) Open Cydia.
2) Tap Changes on the bottom.
3) Tap Refresh in the top left corner.
4) Wait for Cydia to reload data (IMPORTANT!)
5) Search for 'p0sixspwn'.
6) Install it.
7) Reset Network Settings.
That should be it.
We'll also push an update for the Mac version of p0sixspwn shortly to address new jailbreakers.
~@iH8sn0w & @winocm