Supports more modern web features and faster performance on older hardware.
Because this browser build does not receive ongoing updates, you must configure it carefully to maintain stability. Disable Automated Update Prompts
Navigate to the official Mozilla FTP archive or the Mozilla Support page for legacy systems . Download the file named Firefox 78.15.0esr.dmg . : Open the downloaded .dmg file from your Downloads folder. Drag the Firefox icon into your Applications folder.
Once you are on the download page, simply click the prominent download button. The website will automatically select the appropriate version for your Mac.
A: Use curl in Terminal: curl -O https://archive.mozilla.org/pub/firefox/releases/78.15.0esr/mac/en-US/Firefox%2078.15.0esr.dmg
Firefox is one of the few browsers that offers a dedicated, stable pathway for older Mac systems through its Extended Support Release (ESR) program. Here is exactly how to find, download, and install the correct version of Firefox for your Mac OS X 10.10.5 system. The Compatibility Challenge
The Firefox installer will be downloaded as a .dmg (disk image) file, typically named Firefox.dmg . The download size is approximately 128 MB, so it should not take long on a standard internet connection. By default, the file will be saved to your Downloads folder, though you can configure this based on your browser settings.
: Firefox version 78 was the last to support OS X 10.9 Mavericks, 10.10 Yosemite, and 10.11 El Capitan. Security Status : Support for this version ended in October 2021
If you need a different language, navigate to the main directory and select your preferred regional folder. Installation Steps Download the .dmg file from the link above.
Supports more modern web features and faster performance on older hardware.
Because this browser build does not receive ongoing updates, you must configure it carefully to maintain stability. Disable Automated Update Prompts
Navigate to the official Mozilla FTP archive or the Mozilla Support page for legacy systems . Download the file named Firefox 78.15.0esr.dmg . : Open the downloaded .dmg file from your Downloads folder. Drag the Firefox icon into your Applications folder. firefox download for mac 10105 upd
Once you are on the download page, simply click the prominent download button. The website will automatically select the appropriate version for your Mac.
A: Use curl in Terminal: curl -O https://archive.mozilla.org/pub/firefox/releases/78.15.0esr/mac/en-US/Firefox%2078.15.0esr.dmg Supports more modern web features and faster performance
Firefox is one of the few browsers that offers a dedicated, stable pathway for older Mac systems through its Extended Support Release (ESR) program. Here is exactly how to find, download, and install the correct version of Firefox for your Mac OS X 10.10.5 system. The Compatibility Challenge
The Firefox installer will be downloaded as a .dmg (disk image) file, typically named Firefox.dmg . The download size is approximately 128 MB, so it should not take long on a standard internet connection. By default, the file will be saved to your Downloads folder, though you can configure this based on your browser settings. Download the file named Firefox 78
: Firefox version 78 was the last to support OS X 10.9 Mavericks, 10.10 Yosemite, and 10.11 El Capitan. Security Status : Support for this version ended in October 2021
If you need a different language, navigate to the main directory and select your preferred regional folder. Installation Steps Download the .dmg file from the link above.
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