Played a little bit with it and now I cannot select "recovery" in fastboot. It just boots the system. Any Thoughts on that?

Yes!! Downgraded as you suggested all my data is here, the phone works. Great job on the installer btw. That thing works like a charm. And now to backing up my data...

Same here, stuck on boot warning screen.
Is there a way to at least recover the data before I go messing around with it?