ok and how can I install the rooting tools to root my phone with that recovery?
Well you will have to flash a custom recovery before you can root. There are some all in one rooting tools here http://xdaforums.com/showthread.php?t=2242635 Make sure after you get the custom recovery installed, to make a backup and then root. To install a custom recovery you can do it by following @vomer guide if you want to.
---------- Post added at 01:48 PM ---------- Previous post was at 01:43 PM ----------
With ARHD 22.0 I use the wi-fi hotspot app. It works great seamless and toggle already incorporated in the quick settings... Give that a shot.
Sent from my HTC One using XDA Premium 4 mobile app
That's the native hotspot and that user is trying to use it free.