Install Mozilla Firefox Open your Internet browser and go to the Mozilla Firefox download page. Click the Free Download button in the center of the page. Once the download has completed, click Run or on the download itself (usually in the lower-left corner of your browser window). Follow the prompts to install Mozilla Firefox.Can you download an older version of Firefox?
If you want to run an older version of Firefox, Mozilla allows you to download two older versions -- Firefox 3.0 and Firefox 13 -- directly from its website. However, neither version is available from the Firefox main page.Is Firefox safe to download?
Yes, Mozilla Firefox is safest browser available. I used the mozilla firefox pc it is most different to internet explorer it is provided the best internet speed and it downloads and uploads time are so low so that why it is batter to internet explorer.