Perform a Chrome OS Rollback on Your Chromebook Pro
If a new update creates a problem, no worries! You can roll back your Chrome OS to the last stable version. Make sure to save any important data before performing a rollback, or you can perform a recover to restore your chromebook.
To perform a rollback, navigate to the Status Tray > Settings.
Scroll to the bottom and select Show advanced settings.
Scroll to the bottom again and select Powerwash.
At the Powerwash screen, press Ctrl + Shift + Alt + R.
Select Powerwash and Revert.
It will take a couple of minutes for the Powerwash to take place and will erase all user accounts and local data.
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