Open Settings, navigate to “System”, tap on “Advanced” and tap on “System update”.
Click the Refresh Icon in the top right corner.
If an update is available, press the “Download” button.
When the download completes, click “Install”. Once the update process has finished, the device will display a “Reboot” button, you may need to go into the Updater menu in Settings, “System” to see it. This will reboot you into the updated system.