eBrnd

I guess I broke it on mine. I flashed the persist.img from the stock rom archive in order to bring back rotation and keyboard backlight*, which worked. However, I get "Not supported by this device" from the Key Attestation app. *) I thought I had already wiped my persist at that point by installing Ubuntu and Sailfish, but apparently that wasn't the case. Bummer.

For me it started working again after I did "fastboot flash persist persist.img" (using the persist.img from the Archive posted above) (Edit: Don't try at home, it might do more harm than good. See the thread about landscape mode). I've read that does not restore all functionality, but on my Pro1X everything seems to work fine for now (i.e. Screen rotation, keyboard backlight etc. are back).