Since you posted in the '''Firefox for iOS''' (for iPhone/iPad) section are you asking about Firefox updates on iPhone/iPad or are you really asking about Firefox updates on desktop Firefox for Mac OSX ? If you are referring to macOS I can move the thread to Firefox section. According to your Question Details > More system details your User Agent is Mozilla/5.0 (Macintosh; Intel '''Mac OS X 10.10'''; rv:78.0) Gecko/20100101 Firefox/78.0 So I figure you are referring to desktop Firefox and using it on the old Mac OS X 10.10 (ten.ten) Besides updating your OS to Mac OS X 10.'''12''' (ten.twelve) or later, the most current Firefox version you can install on mac OS 10.10 is Fx 78.9.0 ESR though it is EOL with no more updates. https://support.mozilla.org/en-US/kb/firefox-mac-osx-users-esr https://www.mozilla.org/firefox/78.0/system-requirements/ https://www.mozilla.org/firefox/79.0/system-requirements/ https://www.mozilla.org/firefox/95.0/system-requirements/ In case you do not already have the current Fx 78.15.0esr. 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/