Choose operating system

Pick one. It will slowly climb from 0% and stop at 99%.

Windows

Choose Windows version

Windows 10 mimics the classic bright-blue reboot update screen.

Working on updates 0%
Don't turn off your PC. This will take a while.
Installing updates
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0%
Preparing
iOS

Installing update…

AND

Installing system update

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0%
Your device may restart. Please keep it plugged in.