How to update mozilla firefox to the latest version?

By default, Firefox updates automatically. You can always update manually, in which case an update is downloaded but not installed until you restart Firefox. Here’s how to set it up:

  1. Click the menu button  , click  Help and select About Firefox.
  2. The About Mozilla Firefox window opens. Firefox will check for updates and download them automatically.

3. When the download is complete, click Restart to update Firefox.