why won't my Mac update to Monterey

Billvicious Said:

"why won't my Mac update to Monterey: I did a backup and my MacBook Pro won't accept the Monterey update"

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I. Verify Compatibility:

What's the model of your Mac? Reveal the Model, and then confirm its Compatibility.

Start Here: Learn About Compatibility and how to Identify your Specific Mac Model - Apple Support

II. How to Verify:

A. Reveal your Model:

What is the Model of your Mac? To find out...

1. Go to: Apple menu
2. Click: About this Mac
3. View: Second Line-Down

then...

B. Compare the Results:

See if the Model you found is shown here: How to upgrade to macOS Monterey - Apple Support

Same problem. waited a total of 12 hours of backing up (thinking the first time there must have been something I missed)

so downloaded a second time....

Only to find out my computer a Mac Book Pro 2019, with Big Sur, would not accept the download.

Com'on Apple get it together.