By default, Firefox updates automatically. You can always update manually, in which case an update is downloaded but not installed until you restart Firefox.

Please note this video shows an older version of Firefox. The screens shown may have changed.

Note: If you use your Linux distribution's packaged version of Firefox, you will need to wait for an updated package to be released to its package repository. This article only applies if you installed Firefox manually (without using your distribution's package manager).

, click Help and select About Firefox . Click the menu button, clickHelp and select On the menu bar click the Firefox menu and select About Firefox . The About Mozilla Firefox About Firefox window opens. Firefox will check for updates and download them automatically. When the download is complete, click Restart to update Firefox .

Update settings can be changed in Firefox OptionsPreferences . Click the menu button and select Options.Preferences. In the General panel, scroll down to the Firefox Updates section.