The update popped up here too. I got the error and after a few minutes shut down by holding the button. Restarted the tablet and all was good. Don't know if the install completed.
Does anyone know how to tell if the update was installed? The tablet now reports no update available.
Thanks,
V
Have a look in Settings/System/About tablet...
The build number should be 'LRX21Q' after the update.
Posted via the Android Central App with Nexus 5 or 9.
Update came for me, along with the error. As I was looking up a phone # to call for support, the tablet restarted and finished the update. Very strange.