NetMap's Technical Help Guide

78.15.0esr/mac/en-US/

A Finder dialogue window will display the application icon. Drag the icon and drop it directly into your local /Applications folder. Wait for the native system copy procedure to finalize. 4. Adjust Security Thresholds

Using outdated browsers on old operating systems like 10.10.5 (Yosemite) exposes you to significant security risks, including malware, phishing attacks, and the inability to load modern encrypted websites (HTTPS).

Open Firefox → Firefox menu → Preferences → → Select “Check for updates but let me choose to install them” – or better, “Never check for updates” (since newer updates will break).

Navigate directly to the official Mozilla FTP Archive for 78.15.0esr. Click the file ending in .dmg to begin your download. Step 2: Clear Out Any Incompatible Versions

Note: You can replace en-US with your local language code (e.g., fr , de , ja , zh-CN ).

In the panel, scroll to the Firefox Updates section.

Open Firefox and type about:preferences into the address bar. Scroll down to the section.

Before you proceed with downloading Firefox, it is always wise to ensure that your Mac meets the necessary system requirements. Here is what you need to run Firefox smoothly on your macOS 10.15 Catalina machine:

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