Where does Software Update save download files?
Neither of the answers already given to this question marked as "Solved" in the Apple Community here are not true for the download of MacOS Big Sur I'm doing to create an installation USB on a Mac that is currently running Big Sur.
The first answer given is the Library - Updates folder, and that is wrong, and the other more general one of doing a sudo search of the file name of the download using the Terminal does not work either, as since I used the App store Software interface combined with the particular URL of Big Sur (macappstores://apps.apple.com/us/app/macos-big-sur/id1526878132?mt=12) to download Big Sur (otherwise it forces you to currently download the latest version of MacOS, currently Monterey) , I have no idea what the operating system and the App store named the file.