You can find the official installation files through the Mozilla FTP Archive .
: Firefox 48.0.2 is the last "standard" release that works on Mac OS X 10.6 (Snow Leopard) , 10.7 (Lion) , and 10.8 (Mountain Lion) . Firefox 48.0 2 Mac Download
Once you’ve completed the , installing it is straightforward. You can find the official installation files through
Firefox 48.0.2 is primarily sought by users of older Mac hardware that cannot upgrade to modern operating systems. Firefox 48.0 2 Mac Download
At the time of its release, Firefox 48 introduced several features that were revolutionary: