System

The System tab manages the router's operating system.

System updates

The panel lists the packages apt-get upgrade would upgrade, each with its installed and its new version, as of apt's last update of its package lists.
Check update updates apt's package lists and lists the packages again.
Upgrade appears when a package can be upgraded; after a confirmation it runs apt-get upgrade -y on the router and shows its output. It upgrades the installed packages only: none is installed or removed, and a package that needs a new one is kept back.
Services restart during the upgrade; when vpn-router is upgraded, the page may not answer for a while, and Reload page loads its new version.
A reboot is offered when a package asks for one, as after a new kernel.
Only one upgrade runs at a time: this one or the upgrade of vpn-router on the Overview tab.