ITUNES UPDATE FOR MAC HOW TO
TUTORIAL: How to update the macOS software on your Mac
To install the update, choose System Preferences from the Apple menu and click the Software Update icon in the System Preferences window, then follow the onscreen instructions.
ITUNES UPDATE FOR MAC FOR MAC
Aside from releasing iOS 13.3 for iPhone and iPad earlier today, Apple also launched the major macOS Catalina 10.15.2 update for Mac computers.