: Go to the Mozilla CDN Directory for version 78.15.0esr .
: When you first open it, macOS may warn you that it’s an application downloaded from the internet. Click Open to proceed. Key Considerations and Risks firefox download for mac 10105 upd
: This version received its final security update on October 5, 2021. It is now several years out of date and does not protect against modern web vulnerabilities. : Go to the Mozilla CDN Directory for version 78