Drag the 'Portable Firefox OS X' folder to your portable device, USB thumb drive, iPod, portable hard drive, memory card, other portable device (also to your internal hard disk) as long as it has. Download prior versions of Firefox for Mac. If you need the previous version of Firefox, check out the app's version history which includes all versions available to download. While the developer is fixing the problem, try using an older version. Sometimes, the latest version of an app may cause problems or not even work.

Firefox 9 was released on December 20, 2011, includes various new features such as Type Inference, which boosts JavaScript performance up to 30%, improved theme integration for Mac OS X Lion, added two-finger swipe navigation for Mac OS X Lion, added support for querying Do Not Track status via JavaScript, added support for font-stretch.

Mac users interested in Firefox 48.0 for mac os x 10.6.8 generally download: Firefox 4 46.0 Free Firefox 4 is the latest version of one of the most popular web browsers.

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