: Open the downloaded Firefox 78.0.2.dmg file and drag the Firefox icon into your Applications folder.
While newer versions are available on the Official Firefox Site, legacy versions like 78.0.2 must be sourced from the archive: firefox 78.0 2 download mac
: It is the last major release series to support macOS 10.9 (Mavericks) , 10.10 (Yosemite) , and 10.11 (El Capitan) . : Open the downloaded Firefox 78
This specific version is primarily sought by users with older Mac hardware that cannot be updated to newer macOS versions. To run Firefox 78
To run Firefox 78.0.2 on a Mac, your system must meet the following minimum criteria: : macOS 10.9 through macOS 10.15. Processor : Intel x86 processor. RAM : Recommended 512 MB or more. Hard Drive : Approximately 200 MB of available space. How to Download and Install