Well I had to reflash my N900 and N9 from messing around with the OS. My N810 is just fine but I never did much to it, same with my "first one" Jolla. Speaking of which I really should take a dd image of my Jolla as there is no official way for me to reflash my device.

Anyway wanna break stuff try screwing with the OS :P
I think my N900 USB port is starting to get a little loose so getting a bit worried about it.