Type the following command and press Enter: softwareupdate --fetch-full-installer --full-installer-version 10.15.7
sudo /Applications/Install\ macOS\ Catalina.app/Contents/Resources/createinstallmedia --volume /Volumes/CatalinaUSB Use code with caution. download catalina 10157 full installer high quality
Once you have the Install macOS Catalina.app in your Applications folder, you should create a bootable USB drive (16GB+ recommended) for a truly clean installation. Type the following command and press Enter: softwareupdate
Your browser will prompt you to open the . Confirm the prompt. Once the App Store page loads, click the Get button. download catalina 10157 full installer high quality
: Click Get or Download . This will trigger the "Software Update" pane in System Preferences.
(This hash matches the final public release as of Nov 2024; recompute with shasum -a 256 after download.)