Starting with Firefox version 49, Firefox requires Mac OS X 10.9 (Mavericks) or higher. Visit this Apple Support page to find your Mac OS version.
If you're using an outdated version of Firefox on Mac OS X 10.8 (Mountain Lion) or earlier, the only way you can update Firefox to a secure version is to upgrade your Mac OS to a version that Apple supports. Visit this Apple Support page to learn more about upgrading your Mac.
Firefox For Older Mac Os 10.12
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Firefox For Mac Os 10.6.8
While insecure versions of Firefox will continue to work on OS X 10.8 and earlier, using an up-to-date version of Firefox on a supported version of Mac OS will provide you with the best and safest user experience.
Firefox For Older Mac Os Recovery Tool
Apple Mac OS X Snow Leopard. Firefox add-on is a test environment for Firefox OS. Free Publisher: Mozilla Downloads: 76. Manage local music files, listen to. The Safari browser comes pre-installed with macOS and it’s a browser many people love.