How to find our what version of ChromeOS you are running
To find out what version of ChromeOS you are running follow these steps below:
Click on the clock in the lower right corner of your screen.
Select the “Settings” icon (the gear in the upper row of the pop-up window).
Find “About Chrome OS” on the bottom of the left-hand menu and select it.
Your version number will be just below the Google Chrome OS title on top of the window. A button on the right of that number will let you check for any new updates, or install any updates that have been recently downloaded, but not yet installed.