If you are searching for the exact phrase , you are likely facing a common but frustrating problem. You own a Mac running OS X Yosemite (version 10.10.5), and when you try to download the latest Firefox from Mozilla’s website, you are greeted with an error message: “You cannot use this version of the application with this version of macOS.”
Note: You can replace en-US with your local language code (e.g., fr , de , ja , zh-CN ). Look for the file named: Firefox 78.15.0esr.dmg firefox download for mac 10105 upd
While this setup is not recommended for primary, secure daily driving, it is the best possible modern browsing experience available for your legacy hardware. Keep your expectations realistic, use a robust ad-blocker, and consider upgrading your machine at the earliest opportunity. If you are searching for the exact phrase