This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

installing older versions of firefox

  • 1 reply
  • 0 have this problem
  • Last reply by James

richwhite1804
richwhite1804
more options

I need to install version 31 of firefox to my old mac book air. Where do I start? The IOS I'm running is Mojave. Thanks

I need to install version 31 of firefox to my old mac book air. Where do I start? The IOS I'm running is Mojave. Thanks

All Replies (1)

James
James
  • Moderator
  • Top 10 Contributor
more options

Your Macbook is using macOS as iOS is the mobile OS used on iPhone's and earlier iPad's as more current iPad's uses iPadOS.

The latest update for macOS Mojave is 10.14.6 (ten.fourteen.six)

So Firefox 115 ESR is the latest you can run on macOS 10.14 as Fx 116.0 and later requires macOS 10.15 (ten.fifteen) or later to run. The current version is 115.14.0esr and 115.15.0esr in early September will be the last update unless Mozilla decides to extend support. https://support.mozilla.org/en-US/kb/firefox-users-macos-1012-1013-1014-moving-to-extended-support

You can download Firefox 115.14.0esr for macOS at https://www.mozilla.org/firefox/all/#product-desktop-esr

However if you really need the ancient and rather vulnerable Firefox 31.0 released ten years ago on July 22, 2014 then see https://archive.mozilla.org/pub/firefox/releases/31.0/mac/


/moved thread from Firefox for iOS to Firefox section.

Modified by James

Helpful?

Ask a question

You must log in to your account to reply to posts. Please start a new question, if you do not have an account yet.