Major Nelson posted the following instructions with regards to today’s mandatory Xbox One system update. You can also read the support document for more general instructions. Please note, that the Xbox One will show a green screen with logo to indicate that the update is being installed.
A. If you are using the Xbox One “Instant On” (the low power state that allows you to instantly power up your console by saying “Xbox On”), your console automatically checks for updates when you turn it off. Once we make the update available (on Tuesday, December 10th, 5:00 PM PT) this means the following will happen:
Your console will automatically download the update after you turn it off. Once the update has been downloaded in the background, your console will power completely down. Please note: You will need to manually power your console back on after the update has been downloaded. Because the update will power your console completely down, the “Xbox On” voice command won’t be available until after the update is fully installed.
When you turn the console on you’ll see the update being applied. After that, your Xbox One will reboot. You’ll know the update is installing when you see the Xbox logo on the green background (like at the top of this post.) This can take anywhere from 2-5 minutes. Once the update has finished installing, you’ll boot to the Home screen and you’re all set.
Don’t worry, if you are out of town for the holidays, you console also does regular checks for updates and will download it in the background even if you have not used you Xbox One in a couple of days.
B. If you are not using the Xbox One “Instant On” feature, you will be required to download and apply this update after Thursday, December 12th at 2:00 AM PT.
This update fixes the following:
Addresses SmartGlass issues for some users when coming in and out of connected standby
Addresses multiplayer issues for some users when re-joining games
Addresses issues with inconsistent notifications for some users
Addresses dashboard performance for some users
Offers improvements for Xbox One’s TV, system update, and content update services for scaling over time
Updated wireless networking driver to improve connectivity issues for some users