Who we are and why we're here

By default, Firefox updates automatically. You can always check for updates at any time, in which case an update is downloaded, but it is not installed until you restart Firefox.

Update Firefox

  1. Click the menu button Fx89menuButton at the right side of the Firefox toolbar, go to Help, and select About Firefox. The About Mozilla Firefox window will open.
  2. Firefox will check for updates automatically. If an update is available, it will be downloaded.