A FAQ site has been created:  

2)     Scroll down and open Software Update

3)     Tap on Download and Install

The system will check for updates

4)     If updates are available, you should be prompted to install.  If not you will see Your software is up to date.

2)     Open System

3)     Tap on Advanced

4)     Open System Update

5)     If an update is available you should see the update and the option to reboot

After your device restarts, it may show some finishing steps.

After all updates are installed, you should see a message indicating your system is up to date.

Google Documentation:

We recommend that you check each device for updates at least once per week. Many devices have options that can be enabled to automatically install updates when they are available.

Please be aware that after installing updates, your device may need to restart. While you should receive a notice and a prompt to reboot, we do recommend that you save any work before starting the update process, and close any programs before you start any update process.

Please check for instructions for your device below. If your device is not listed, or if your device looks different than the information provided, please refer to any vendor support or instructions that may be available.

If you encounter any problems or if you have any questions or concerns, please contact the ITS Service Desk.