Press Enter. The progress will be displayed in the Terminal window. Method 3: Third-Party Direct Downloads
This guide provides everything you need to know about downloading and installing the macOS Catalina 10.15.7 DMG file safely. Why macOS Catalina 10.15.7? Download Macos Catalina 10.15.7 Dmg File
If you attempt to run the installer and it fails with this error, your DMG might be corrupted, or the certificate has expired. Fix: Press Enter
sudo dd if=~/Desktop/Catalina.img.dmg of=/dev/rdiskN bs=1m your DMG might be corrupted