Mar 1, - macos macbook-pro software-update. I downloaded an update today and had to click "install later." Now, not sure where that update is. Where How to delete partially downloaded updates in High Sierra. Aug 30, - I have Software Update set to download updates automatically and then notify me when they are I was wondering where these downloaded updates are stored before I install them. where is it stored in macOS Catalina? Check Library->Updates. There may be some caches hidden elsewhere, but I think Updates is the main folder. (Note: at first this was a comment, but since I 1 answer.Having bought a subscription, you can download this or other directories on our website. To download the file, click on the button below.