upgrade from 10.12.6 to 10.13.1 or 10.13.3
On a iMac, I can't upgrade. It tells me I need to be at 10.13. Can't find that one.
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Hi,
macOS 10.13 High Sierra is available at the App Store for download but make sure your Mac can run High Sierra.
Help here > How to download macOS High Sierra
