Download Macos Catalina 10.15.7 Dmg File [exclusive] Direct

sudo dd if=~/Desktop/Catalina.img.dmg of=/dev/rdiskN bs=1m

If you cannot access the App Store (e.g., dead Mac recovery), only trust communities like: Download Macos Catalina 10.15.7 Dmg File

For most users, the safest way to download macOS Catalina is directly through Apple's servers. sudo dd if=~/Desktop/Catalina