Firefox 78.15.0esr received its final security patch in October 2021. Because it is no longer receiving security updates, using it for sensitive tasks like is not recommended. It should primarily be used to maintain basic web functionality on hardware that cannot be upgraded to a newer macOS. Firefox 78.0, See All New Features, Updates and Fixes
Firefox 78 was designed as the "end of the line" for several older macOS versions. It is the final version that supports: OS X 10.10 Yosemite OS X 10.11 El Capitan where can i download firefox 78 for mac
This is the most stable and final "Extended Support Release" of the 78 series. You can find the .dmg file in the Mozilla 78.15.0esr Mac directory. Firefox 78
If you need the initial release rather than the ESR version, it is available in the Mozilla 78.0 Mac directory . Why Download Firefox 78? If you need the initial release rather than
If you try to install a newer version (like Firefox 79 or above) on these systems, the application will likely fail to launch. How to Install Firefox 78 on Your Mac
Click on the file ending in .dmg (e.g., Firefox 78.15.0esr.dmg ).