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Stuck on Mac OS 10.11 and FF 78.15esr?
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Old non-tech guy, perplexed... Our 2009 MacBook Pro is physically perfect, but it has OS 10.11.6. Apple's server said "no" to OS 11 or maybe even 10.12; I cannot recall which. (The 2015-16 Mac is fine with OS 12.6.3 and FF 110). Apple long ago quit supporting the older Safari. The older Mac's Firefox works well but seems stuck on FF 78.15esr. In FF Preferences it says "Firefox is up to date." Bravo, _if_ enduringly true. But I sense, among the hi-tek jabber, that even security support for 78.15 is ending soon or already has (esr is also up to about #110). Someone said "You're stuck if you cannot upgrade OS to 10.12 or higher." We have no interest in new features but need email and ordinary browsing. I can afford the cost of new hardware and app-banditry, but not the stress of shopping, migrating, and struggling through the learning curve much less a security breach. What can we do?
Modified by cor-el
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Firefox since Fx 79.0 and later including the current Release Fx 110.0 requires Mac OS X 10.12 (ten.twelve) at minimum to run. https://www.mozilla.org/firefox/79.0/system-requirements/
The old EOL Fx 79.15.0 esr is the latest version to still support the old EOL Mac OSX 10.9, 10.10, 10.11 https://support.mozilla.org/en-US/kb/firefox-mac-osx-users-esr
Modified by James