Update mac os

Hoiz wrote:

https://discussions.apple.com/content/attachment/6f63d3da-799a-4939-aa1e-0021aa8fd43c

I am Catalina 10.15 want to update to 10.15.7

But it doesn't allow. Any expert can help!!

Do you meet all the tech specs...?

How to upgrade to macOS Big Sur w/tech specs

https://support.apple.com/en-ca/HT201475

The point update from 10.15 to 10.5.7 will be included in the full installer:

The older macOS installer backups on this server:

https://support.apple.com/en-gb/HT211683

verify you are using the Safari browser to download/initiate the macOS links.

Hoiz wrote:

Thank you so much for your help. But I got one issue, after I follow the step to update. It mentioned it can't find the hard disk, so the only option for me is back to 10.15.

I would do what works,

If you can reinstall the macOS 10.15 then see after that fact if 10.15.7 got installed as expected.