# 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](router.md) tab.