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.

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

Natao arisiva ity resaka mitohy ity. Mametraha fanontaniana azafady raha mila fanampiana.

Reinstall ESR on old Macbook Pro with OS 10.11.6

  • 2 valiny
  • 1 manana an'ity olana ity
  • 4 views
  • Valiny farany nomen'i AliceWyman

more options

I accidentally deleted Firefox ESR that worked fine for years on my old Macbook Pro laptop (2009) running El Capitan OS 10.11.6. Now I can't reinstall it unless my OS is a minimum of 10.12. I don't want to mess with attempting an OS upgrade for fear of losing files and photos. This computer is strictly a nostalgic backup that I would like to keep functioning for a while longer. Any way around this?

I accidentally deleted Firefox ESR that worked fine for years on my old Macbook Pro laptop (2009) running El Capitan OS 10.11.6. Now I can't reinstall it unless my OS is a minimum of 10.12. I don't want to mess with attempting an OS upgrade for fear of losing files and photos. This computer is strictly a nostalgic backup that I would like to keep functioning for a while longer. Any way around this?

All Replies (2)

more options

Firefox 78.15.0 is the last version for your Mac OS X platform (update channel: mozilla-mac-eol-esr1) and you will no longer receive updates, so you are out of luck if you can't update your OS.

See:

more options

In case it helps, the English (US) dmg installer for Firefox 78.15.0esr can be downloaded here: https://download-installer.cdn.mozilla.net/pub/firefox/releases/78.15.0esr/mac/en-US/