I installed Android O yesterday on my 5X with no issues at all. This morning I tried to install the update that was available and each time it downloads fine but on the restart/install it crashes and all my screen shows is an Android facedown with an exclamation point in its back and the small word "error" with exclamation point. I've tried this a few times today with the same result. I have to hold the power button for 15 seconds and the phone will reboot.