Firefox Download ((new)) For Mac 10105 Upd Jun 2026

After successfully completing the , you need to configure Firefox to work safely on an outdated OS.

You can download the English (US) installer directly from the Mozilla CDN. File Name: Firefox 78.15.0esr.dmg firefox download for mac 10105 upd

Before installing the legacy version, open your Applications folder. If you see a greyed-out Firefox icon with a "no entry" sign, drag it to Trash. Also empty your Trash to avoid permission conflicts. After successfully completing the , you need to

A: No. Third-party “updaters” for old macOS versions are often malware. Always use the official Mozilla FTP archive. After successfully completing the

Sites like Uptodown and MacUpdate maintain archives of older .dmg files if the official archive is difficult to navigate. Recommendations for Older Macs