Jul 22, 2014.
![Firefox 24 esr mac download version Firefox 24 esr mac download version](/uploads/1/2/6/8/126875051/819109099.jpg)
On June 30th, macOS 10.9, 10.10 and 10.11 users will automatically be moved to the Firefox Extended Support Release (ESR).
- If not please click here: Firefox 24.0 (ESR) (43.91 MB) Supported Systems Mac OS X 10.6 (Snow Leopard) (Intel), Mac OS X 10.7 (Lion) (Intel), Mac OS X 10.8 (Mountain Lion) (Intel).
- 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!
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While Apple doesn’t have an official policy governing security updates for older macOS releases, their ongoing practice has been to support the most recent three releases (i.e. version N, N-1, and N-2). The last security update applicable to macOS 10.11 was made available nearly 2 years ago in July 2018 (https://support.apple.com/en-us/HT201222). Unsupported operating systems receive no security updates, have known exploits, and can be dangerous to use, which makes it difficult and less than optimal to maintain Firefox for those versions.
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Users do not need to take additional action to receive those updates. On June 30th, these macOS users will automatically be moved to the ESR channel through application update.
In the meantime, we strongly encourage our users to upgrade to mac OS X 10.12 or higher to benefit from the security and privacy updates.
For more information please visit the Firefox support page.
Mozilla Firefox Extended Support Release (ESR) is, essentially, a slower-moving, more stable version of the regular browser. While standard Firefox sees a major release every 6 weeks or so, Firefox ESR will only move a whole release number every 54 weeks, meaning that you're much less likely to find some new tweak has broken your favourite extensions.
Of course this doesn't mean the browser will see no movement at all for an entire year. Every time standard Firefox is updated, Firefox ESR will incorporate all the latest security updates in its own minor upgrade, so the program will be every bit as safe to use: you just won't have all the latest features.
If you're a home user then this probably means that Firefox ESR isn't for you. Firefox ESR will remain at v68 for many months, so you'll be missing out on all the new interface tweaks, tab options and assorted browser speeds which Mozilla have added in the past few months.
If you're managing Firefox deployment in a business, though, or anywhere else with a large number of users, then it's a different story. You really don't want to have to get into huge firefights because a browser update has caused problems, stability is far more important - and if that sounds like you then opting for Firefox ESR could be a very good idea.
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Verdict:
If you can live without the latest browser features then Firefox ESR will repay you with improved stability and fewer compatibility issues