Tried to update Firefox, but my system is no longer supported
I naively tried to update my Firefox software, but then when I tried to open it, I got a message saying my system is too old. I have OS X El Capitan Version 10.11.6. I gather you can download an older version of Firefox, but the directory is rather confusing, I don't know which option I need. Any help would be gratefully received, thank you!
Chosen solution
https://support.mozilla.org/en-US/kb/firefox-mac-osx-users-esr
The most updated version you can run on macOS 10.11.x is Fx 78.15esr
https://archive.mozilla.org/pub/firefox/releases/78.15.0esr/mac/en-US/ other locales at https://archive.mozilla.org/pub/firefox/releases/78.15.0esr/mac/
Fx 79.0 and later has required mac OS 10.12 or later to run. https://www.mozilla.org/firefox/79.0/system-requirements/ https://www.mozilla.org/firefox/94.0/system-requirements/
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Chosen Solution
https://support.mozilla.org/en-US/kb/firefox-mac-osx-users-esr
The most updated version you can run on macOS 10.11.x is Fx 78.15esr
https://archive.mozilla.org/pub/firefox/releases/78.15.0esr/mac/en-US/ other locales at https://archive.mozilla.org/pub/firefox/releases/78.15.0esr/mac/
Fx 79.0 and later has required mac OS 10.12 or later to run. https://www.mozilla.org/firefox/79.0/system-requirements/ https://www.mozilla.org/firefox/94.0/system-requirements/
Modified by James
Thank you so much for your help.