For those already on an earlier version of Catalina, you can download the 10.15.7 Update or the 10.15.7 Combo Update directly as DMG files from the Apple Support site. Third-Party ISO Sources

Unfortunately, I couldn't find a direct, official link to download the macOS Catalina 10.15.7 ISO file. Apple typically doesn't provide direct ISO downloads for macOS.

While Apple typically provides "Install Assistant" packages, an is specifically required for virtualization software like VMware, VirtualBox, or ProMox. Below is a guide on how to safely acquire and create this file. Why macOS Catalina 10.15.7?

Another way to download the macOS Catalina 10.15.7 ISO file is to use a torrent client. However, this method is not recommended, as it may expose your Mac to security risks.

The download typically requires a compatible Mac; if yours isn't, the "Get" button may be greyed out .

Open the on your Mac and search for "macOS Catalina." Click Get to download the installer to your /Applications folder. It should be named Install macOS Catalina.app . 2. Use Terminal to Create the ISO Open Terminal and run these commands one by one:

(Note: If you are on Windows and cannot use Terminal, you must find a trusted source for the "InstallAssistant.pkg" or the DMG file, but creating the ISO requires a Mac environment.)