Important: If the update didn't start, didn't complete or there was some other problem, you can go to the Systems & Languages page to download and install the latest version of Firefox for your system and language or you can use this download link (see How to download and install Firefox on Windows Install Firefox on Linux How to download and install Firefox on Mac for more information).
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. This will provide security updates until the next ESR update in July 2021, after which the affected users will no longer receive security updates.
While Apple does not have a public policy governing security updates for older OS X releases, their ongoing practice has been to support the most recent three releases. The last security update applicable to OS X 10.11 was made available in July 2018. Unsupported operating systems do not receive security updates, have known exploits and can be dangerous to use, which makes it difficult to maintain Firefox on those versions.
Download Mozilla Firefox For Mac Os X 10.8.5
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Up until July 2021, we will be updating affected users with critical security updates through the Firefox ESR channel to help retain the best possible security. After this, no security updates will be provided.
Firefox For Apple Mac
![Latest Latest](/uploads/1/3/4/7/134766350/501875250.png)
Download Mozilla Firefox, a free Web browser. Firefox is created by a global non-profit dedicated to putting individuals in control online. Get Firefox for Windows, macOS, Linux, Android and iOS today! Firefox fans rejoice! With the release of iOS 14 and the latest version of Firefox app, you can now set Firefox as your default mobile browser. And with Firefox widgets for your home screen, you can access your go-to actions even faster — like web search or opening your favorite sites. Mac users interested in Firefox for os x 10.5.8 generally download: Firefox 80.0 Free Firefox is one of the most popular web browsers on the market, providing numerous helpful features and quick speed to millions of users worldwide. Mozilla Firefox Developer Edition Free Get the latest features, fast performance, and the development tools you need to build for the open web.
Download Latest Firefox For Mac
If you want to keep your Firefox version up to date, you will need to upgrade your operating system to macOS 10.12 or higher. Older versions that are not supported by Apple are unreliable and unsafe to use, which also makes it difficult to maintain Firefox on those versions.