Firefox Macos Lion

Update Firefox Mac Os X
Firefox

On a 2GHz aluminum MacBook with 2GB RAM and Mac OS Lion, I tested Firefox 14 against Safari 5.1.7, Opera 12, Chrome 20, and its own predecessor, Firefox 13. Those who in 2019 still run a Mac that is stuck with OS X 10.7.5 Lion because of hardware limitations can still use Waterfox version 56.2.10 from May 2019. It's based on Firefox but stripped off of some technologies. Waterfox is compatible with Firefox syncing of bookmarks, tabs, etc. Over devices (mobiles).

On August 2, 2016, Firefox 48.0 was released. It is scheduled to be replaced by Firefox 49.0 on September 13, 2016. At that point, Mac users using OS X 10.6 Snow Leopard, 10.7 Lion, and 10.8 Mountain Lion will be left behind by the current versions of Firefox. It will be a sad day, as Firefox is the last major browser to support Mac OS X 10.6 through 10.8.

But it’s not all bad news. Firefox has given us Mac support longer than Google’s Chrome browser, which left us behind in April 2016. And in comparison to Apple’s Safari browser, Chrome and Firefox have been downright generous. Safari 5.1.10 was the last version for OS X 10.6, and that arrived on September 12, 2013. Safari 6.1.6, the final revision for OS X 10.7, was unleashed on August 13, 2014, and 6.2.8, the last version for OS X 10.8, a year later on August 13, 2015.

Chrome gave Snow Leopard users 2-1/2 years more support than Apple did, Lion users 20 months more, and Mountain Lion 8 months. When Firefox 49.0 arrives, Snow Leopard users will have had 3 years more support by Firefox than Safari gave them. Lion users, 25 months, and Mountain Lion holdouts, 13 months.

Outdated Does Not Mean Obsolete

Fear mongers will insist on running the latest version of browser on a fully up-to-date operating system with the belief that anything else puts you at risk. The truth is, there are unknown risks in the latest software. You can never be 100% secure.

However, you can be very productive with older operating systems, applications, and browsers. Just because some new piece of software requires a newer OS version is no reason to upgrade – unless it gives you a feature you really need to have. I have been happily working with OS X 10.6 on my 2007 Mac mini for years. I use Safari, Chrome, and Firefox daily on it, and only one of them is current – and not for much longer.

Then again, OS X Snow Leopard itself is far from current, yet it allows me to run lots of software and be very productive. I don’t find it limiting at all to use outdated software with an outdated operating system on a discontinued computer that will never run OS X 10.8 or newer. It’s good enough for what I need it to do.

Honestly, that’s the whole point of Low End Mac. You can be productive even if you can’t run the latest Mac OS and browser. After all, there was a time when they had nothing newer to use, and they were productive then.

The Real World

Security experts will count out hundreds or thousands of security issues with whatever you’re doing on your computer, and none of it matters until someone targets that issue in a way that reaches your machine. That’s the real world. Theoretical security problems are not real until they become exploits, and even then the problem might never reach your system if you’re not downloading apps from unreliable sources.

Firefox Legacy

Firefox Legacy is an unofficial modified version of Mozilla Firefox that works on older Mac OS X versions, including 10.6 Snow Leopard, 10.7 Lion, and 10.8 Mountain Lion.

Download it now and breathe new life into your old Mac.

OS X 10.8 Mountain Lion

Current version for OS X 10.8 Mountain Lion: 71.0p2 (2020-09-15)
IMPORTANT NOTE ABOUT UPDATING TO v71: A new Firefox profile will be created when you update from earlier versions to version 71.0. To restore your previous data, type 'about:profiles' in the address bar, then find your previous profile (if you can't tell which, try each one) and set it as default. Then, restart Firefox Legacy. I apologize for the inconvenience; the cause of this issue is not known.

OS X 10.7 Lion

Update Firefox Mac Os X

Current version for OS X 10.7 Lion: 68.12.0p3 (2021-01-24)
Now featuring support for numerous newer web standards, including Push, Service Workers, Feature Policy, ResizeObserver, Promise Rejection Events, more of the Animations API, and several CSS features. This should improve compatibility with many websites.
For security and privacy reasons, starting in version 68.12.0p3, support for TLS 1.0 and 1.1, HPKP, and the Battery API is disabled.

OS X 10.6 Snow Leopard

Only Firefox 52 is available for OS X 10.6 Snow Leopard; it will not be updated to a recent version due to technical limitations of the OS.
Note: the program is called 'Nightly' due to licensing restrictions prohibiting the use of the official Firefox branding.

Current version for OS X 10.6 Snow Leopard: 52.9.1p1 (2020-04-11)

Firefox Legacy speaks your language!

Any of the language packs for the matching official Firefox version are supported.

Firefox

List of language codes (to help you locate the right file to download)

Small areas of the about screen and the help menu that are specific to Firefox Legacy will remain untranslated.

Known Issues

Small problems with displaying right-to-left languages on OS X 10.7
The crash reporter does not work on OS X 10.7 or 10.8 (it itself crashes)
A useless empty share menu is visible on OS X 10.7
The sandbox (a security feature intended to protect you from malicious websites) does not work, and has been disabled
On OS X 10.7, the browser crashes when the camera or microphone are used
WebGL does not work on computers with GPUs not supporting OpenGL 3.0 (many 2006-2007 Macs)
Some buttons are invisible on Google Calendar, WordPress, and other sites that use font-based icons
DRM (Encrypted Media Extensions/Widevine) does not work
Version 68.12.0 only: Screen capture does not work and has been disabled
Version 71.0 only: The progress bar is not visible on the icons of downloading files in the Finder

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