Click the folder for your locale (e.g., en-US/ for US English).
The safest way to download an older version of Firefox for Mac is through the official Mozilla Release Archive . This repository contains every version of Firefox ever released, organized by version number. how to download old version of firefox for mac
Scroll through the list of folders (e.g., 78.15.0esr/ or 115.0/ ) and click the version you need. Select Your OS: Click the mac/ folder. Click the folder for your locale (e
To prevent Firefox from immediately updating itself back to the latest (possibly incompatible) version, follow these steps: how to download old version of firefox for mac
If you're using an older Mac that can no longer run the latest software, or if a specific web extension requires an earlier build, you can still access and download old versions of Firefox.