Software Updates
I am running macOS Catalina 10.15.7 and trying to check for updates - on the software update screen wheel keeps spinning "checking for updates".
iMac 21.5″, macOS 10.15
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Q - " am running macOS Catalina 10.15.7 and trying to check for updates - on the software update screen wheel keeps spinning "checking for updates".
A - That looks Totally Right
A - Predicated on all Security Updates for Catalina have been downloaded and installed, Apple has thuslar Ceased Offering Updates to macOS 10.15 Catalina
A - Now, if the use is looking to upGrade to a newer version of macOS - that is totally different matter
The Age of this computer will Govern what newer version of macOS it will Qualify to install. Use About this Mac from the Apple Icon on Desktop - the required Information will be there.
With the above information in-hand - follow this How to get old versions of macOS and verify what version this computer Qualifies to install. For Best results use Safari to commence the download as Others may not work.
Safari will open a redirect and open the Apple Store where the download can commence.
The links below are a list of the Hardware Requirements by each different version of macOS.
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Computer Qualify for the Monterey upgrade
macOS Big Sur 11 hardware requirements
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