Find your desired version number (e.g., 115.0 , 91.0 , 52.0 ). Click on it.
Search for "Firefox" and your target version.
Search for "Firefox ESR download."
Download the installer and verify the file hash if provided. Method 3: Firefox Extended Support Release (For Enterprise) If you need a "stable old version" that still gets security patches, use ESR. While not "ancient," ESR is ~1 year behind the main release.
Go to a trusted old-software repository.
Go to the official directory: https://ftp.mozilla.org/pub/firefox/releases/
Download Mozilla Firefox Old Version -
Find your desired version number (e.g., 115.0 , 91.0 , 52.0 ). Click on it.
Search for "Firefox" and your target version. download mozilla firefox old version
Search for "Firefox ESR download."
Download the installer and verify the file hash if provided. Method 3: Firefox Extended Support Release (For Enterprise) If you need a "stable old version" that still gets security patches, use ESR. While not "ancient," ESR is ~1 year behind the main release. Find your desired version number (e
Go to a trusted old-software repository. Find your desired version number (e.g.
Go to the official directory: https://ftp.mozilla.org/pub/firefox/releases/