Mozilla Firefox should automatically download updates and prompt you when they are
available to install. To verify that your version of Firefox is the latest or to update
manually, follow these steps:
1. Open the Mozilla Firefox browser.
2. Click the Open menu button in the upper right-hand corner of the screen.
3. In the menu that appears, click the Open Help Menu button at the bottom.
4. Select About Firefox.
5. The window that appears will automatically check for updates and show you the current version of Firefox. If an update is available, there will be an option to install the update.
Download the latest version of Firefox from the official Firefox download page: https://www.mozilla.org/en-US/firefox/