After you upgrade, the change notes appear on the screen and mention that you may need to unlink the Shield from Google Home.
UNLINKING CAUSED ME TWO PROBLEMS
- Google Home would not find the Shield when I tried to relink. SOLUTION: Cast something to the shield (spotify, youtube, etc.), tap the notification on your device that reads "a device on your wifi is casting" which will open the Google Home app; press the 3 dots and choose link device.
- Likely caused by #1, I could not say "hey google, play X show" and have it play on Netflix. I would hear the dreaded "sorry, I can't play netflix on android tv yet" SOLUTION: Original source , on Shield, Settings > Apps > Scoll to bottom and select "show system apps", find the "Google" app, uninstall updates, reboot the shield, go to play store, update Google, and then these commands should work.
Hooray! All the time I've saved by using my voice to turn on the tv + launch a netflix show is now offset by all this troubleshooting. Seriously though this is brutal, and I could not believe the number of past posts I found when googling to troubleshoot these issues. Hopefully this helps someone.
Edit: spelling of shield, I managed to butcher it a couple times.
When Nvidia Spot support will come?