Here, x.y is the version of Mac OS X (for instance, Mac OS X 10.15). Starting in Firefox 87, Firefox caps the reported Mac OS X version number to 10.15, so macOS 11.0 Big Sur and later will be reported as '10.15' in the User-Agent string. Note that Firefox no longer officially supports Mac OS X on PowerPC. Mozilla Firefox Os X free download - Mozilla Firefox Portable, Mozilla Firefox Beta, Mozilla Firefox (64-bit), and many more programs.
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If you're using an outdated version of Firefox on Mac OS X 10.8 (Mountain Lion) or earlier, the only way you can update Firefox to a secure version is to upgrade your Mac OS to a version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.
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.
Mozilla Firefox Os X Settings
Mozilla Os X 10.7.5
Learn the best of web development. Get the latest and greatest from MDN delivered straight to your inbox. The newsletter is offered in English only at the moment. Firefox version 78 is the last supported Firefox version for Mac users of OS X 10.9 Mavericks, OS X 10.10 Yosemite and OS X 10.11 El Capitan. These users will be moved to the Firefox Extended Support Release (ESR) channel by an application update. Functions can be added through add-ons, created by third-party developers, of which there is a wide selection, a feature that has attracted many of Firefox's users. Mozilla Firefox is a cross-platform browser, providing support for various versions of Microsoft Windows, Mac OS X, and Linux. Firefox Features. Improved Tabbed Browsing; Spell Checking.