This article explains how to update your MacBook Pro. The instructions apply to all models and all versions of macOS and OS X.
How to Update Software on a MacBook, iMac, and Apple Computer
If your Mac is currently running macOS Mojave (10.14) or later, get upgrades in your Mac’s System Preferences. If your Mac is running macOS HighSierra (10.13) or earlier, get updates through the App Store.
If you have a recent version of macOS, you can reach the Software Update window by first going to System Preferences. You can use this method to update from the previous two versions of macOS. For example, you can use this method to upgrade to Big Sur (11.0) from macOS Catalina (10.15) or Mojave (10.14). Here's how:
Click the Apple icon in the top left corner of the screen.
