Update Chrome OS and Browser
(Chrome automatically checks for updates on Chromebooks, but you can also check for and install updates manually.)
Install updates - Chromebooks
Your Chromebook automatically downloads software updates when it's turned on and connected to Wi-Fi. After an update is downloaded, you need to install it:
Look in the status area, where your account picture appears, for the Update icon . This icon shows only when an update had already been downloaded and is ready to install.
Click Update Restart to update.
Note: If your Chromebook is connected to a mobile hotspot or using cellular data, it won't automatically check for updates or download them.
Check for updates yourself - Chromebooks and Chrome for Windows/Mac
You can check for and install updates before the next automatic update:
Click on the system tray and select Settings then select in the upper left hand corner then About Chrome OS on Chromebooks or within Chrome click on the menu button Help About Chrome OS.
In the "About" window that appears, click Check for and apply updates. Your Chromebook will start to install any available updates.
After the updates are installed, click Restart to update.