FireFox is a Web Browser like Chrome or Edge. The fie you are trying to open is an installer or Firefox, not a document. If you can find the file in under or your download directory in your browser you used to download the file, you Mac will open it if you click to double click in the file name and it will install or fox for you.
On July 29, 2021 at 10:17:46 AM, Marc Hirschfeld (cameram...@gmail.com) wrote: Hello, I am using Apache OpenOffice 4.1.10 as a document reader. I have down loaded Mozilla's "Firefox 90.0.2.dmg", but can't get OpenOffice to open it. Please advise me as to what to do to open it. Thank-you, Marc Hirschfeld