Sites like MacUpdate and Uptodown also maintain historical versions of the Firefox .dmg files. How to Install
Mozilla no longer prominently links the 78 ESR on its main site. However, they maintain an official archive. Go to: https://ftp.mozilla.org/pub/firefox/releases/78.15.0esr/mac/en-US/ firefox download for mac 10105 upd
If you’ve searched for , you are likely running an older Mac – specifically one capped at macOS 10.10.5 (Yosemite) or a similar legacy build (e.g., 10.11, 10.12). The “upd” in your query suggests you need the latest possible update for that environment. Sites like MacUpdate and Uptodown also maintain historical
Note: You can replace en-US with your local language code (e.g., fr , de , ja , zh-CN ). firefox download for mac 10105 upd
