Upgrading To Os X El Capitan
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If you're using an outdated version of Firefox on Mac OS X 10.8 (Mountain Lion) or earlier, the only way you can update Firefox to a secure version is to upgrade your Mac OS to a version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.
- The Steps for Upgrading to Mac OS X El 10.11 Capitan. The following is steps for upgrading to Mac OS X 10.11 Capitan: Visit the Mac App Store. Locate the OS X El Capitan Page. Click the Download button. Follow the simple instructions to complete the upgrade. For users without broadband access, the upgrade is available at the local Apple store.
- Upgrade To OS X El Capitan Without Losing Your Files 1. Click on this link to go directly to the OS X El Capitan download page on the Mac App Store. Click on the 'Download' button. Now click on 'Continue' to initiate the download process. The download will now begin and will take a while.
- For the strongest security and latest features, find out whether you can upgrade to macOS Catalina, the latest version of macOS. If you still need OS X El Capitan, use this link: Download OS X El Capitan. A file named InstallMacOSX.dmg will download to your Mac.
Sep 30, 2015 Apple is scheduled to release the next version of OS X - OS X 10.11 'El Capitan' - later today, which means that you still have time to carry out some last-minute preparations ahead of the upgrade.
Upgrade Os X El Capitan To Catalina
Upgrade To Os X El Capitan
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.