To install Firefox on a Windows XP system, because of Windows restrictions, the user will have to download Firefox 43.0.1 and then update to the current release. Recommended Hardware Pentium 4 or newer processor that supports SSE2. Firefox 47 free download - Mozilla Firefox, Mozilla Firefox Beta, System 47, 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.
Firefox Version 47 Download For Mac
Firefox Version 47 Download For Mac
If you're using an outdated version of Firefox on Mac OS X 10.8 (Mountain Lion) or earlier, the only way you can update Firefox to a secure version is to upgrade your Mac OS to a version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 Mac Os
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.