Have you considered their extended support release (ESR)? > Firefox Extended Support Release (ESR) is an official version of Firefox developed for large organi

Have you considered their extended support release (ESR)? > Firefox Extended Support Release (ESR) is an official version of Firefox developed for large organizations like universities and businesses that need to set up and maintain Firefox on a large scale. Firefox ESR does not come with the latest features but it has the latest security and stability fixes. https://support.mozilla.org/en-US/kb/switch-to-firefox-extended-support-release-esr https://support.mozilla.org/en-US/kb/switch-to-firefox-exten...