Then you can find and open Firefox in Applications folder in Finder window.
Drag the Firefox app icon to the Application folder on Mac. Then you can click Downloads icon and click the Firefox.dmg installation file to open it. Wait until it finishes downloading the Firefox installation file.
Tip: If you want to manually choose the preferred system and language to download Firefox for Mac, you can visit the Firefox language and system selection page. The Firefox program will auto detect your computer OS and language and recommend the right version of Firefox for you. Open Safari or Chrome and visit Firefox for Mac download page.
To download Mozilla Firefox web browser for your Mac computer, you need to use another browser to access Firefox website, for instance, Apple Safari, Google Chrome. Read More How to Download Firefox for Mac – Quick Guide
