You can also manually check for updates at any time. To do this:
The latest versions of Firefox no longer support OS X 10.10.5. The last compatible release is Firefox 78 ESR (Extended Support Release), which includes security updates until November 2021.
For , the final supported version of Firefox is Firefox 78 ESR . You can still find this legacy installer through official Mozilla Support channels or verified archives like Macintosh Repository . The Ghost in the Machine: A Yosemite Elegy firefox download for mac 10105 upd
Firefox is a popular web browser that offers a range of benefits, including:
Since the main Firefox download page will typically offer the newest version (which requires macOS 10.15 or later), you must use the official archive for the older version. Mozilla Support Download the Installer : Access the Official Mozilla Archive for 78.15.0esr to download the Open the DMG You can also manually check for updates at any time
Before installing, check that your Mac hardware aligns with these legacy requirements: Specification Mac OS X 10.10.5 (Yosemite) Exact Software Version Firefox 78.15.0esr File Format Apple Disk Image ( .dmg ) Architecture Intel 64-bit Last Security Update October 5, 2021 Managing Performance and Limitations on OS X 10.10.5
The last fully supported version of Firefox that runs on Yosemite is . For , the final supported version of Firefox
Bypasses GPU render bugs on legacy Core 2 Duo / early i-Series chipsets. javascript.options.wasm Stabilizes memory leaks during long browsing sessions. 🌐 Navigating the Web Safely on a Legacy Browser
The phrase "10105 upd" likely refers to either Firefox version or macOS 10.10.5 (Yosemite). The table below summarizes the most plausible interpretations to help clarify which one applies to your situation.
To ensure you download a safe, uncorrupted version of the browser, always pull directly from Mozilla's verified file architecture. Avoid third-party download aggregators that may bundle unwanted malware. Step 1: Secure the Correct DMG Installer