You can update the system via WebTools Express. You can find the settings under the [Support] - [Update] tab.
The [Update] tab has the following functionalities:
update the system software
install system patches (security)
check the current software version
check the execution status of the latest patch applied ('Success' or 'Failure').
For an update of the system software, get the packages for the system software update from your local representative.
Do not restart the printer during the upload and update process.
Select the files you need and click 'Open'.
Click [Ok] to confirm, or [Cancel] to reject your entries.
Click [Ok] to open WebTools Express.