i got the problem that i installed over the stock recovery the new 4.4 update for the pf2.
after the update was finished it boots normally the first time and everything runs like it should. But after rebooting the phone gets stucked on the first asus screen.
im able to do a factory reset and then it boots up again but thats no soluation just to do a fully factory reset to be able to boot up the phone.
i tried to install again the update and i could not get mounted the sd card on stock recovery. i installed after that CWM 6.0.28 and it says also that it cant mount the sd card.
so far this is my problem and i hope some of ur smart peeps out there in this forum got an idea for it coz this is pretty much stupid to always factory reset when the phone went down..