Steps to update macOS and applications on Mac (source - https://nektony.com/how-to/update-software-on-mac)

1. HOW TO UPDATE SOFTWARE ON MAC
STEPS TO UPDATE MACOS
Open System Preferences.
Click on Software Update.
Click the Update Now button.
Click Continue.
Your Mac will start downloading the
device system update.
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Open the app you want to update.
Go to the menu and select Check for
Updates.
You will see a window with available
updates or a message saying that you
have the newest.
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2. STEPS TO UPDATE APPS DOWNLOADED
FROM THE APP STORE:
HOW TO UPDATE SOFTWARE ON MAC
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Open the App Store.
In the left sidebar, click on Updates.
If an application needs to be updated,
you will see the Update button next to
its name.
Click on Update.
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3. STEPS TO UPDATE APPS
DOWNLOADED NOT FROM THE APP STORE
https://nektony.com
HOW TO UPDATE SOFTWARE ON MAC
Open the app you want to update.
Go to the menu and select Check for
Updates.
You will see a window with available
updates or a message saying that you
have the newest.
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