I'm trying to upgrade my DTK from 11.0 20A5299w to Beta 10. The download is very large, about 12.2GB. I end up with the "Install macOS Big Sur Beta" app, but when I run it, I get a dialog saying
"This copy of the Install macOS Big Sur Beta application is damaged and can't be used to install macOS."
I've downloaded it three times now, and got the same thing each time. I deleted the first two copies I downloaded, to make sure.
An obvious possibility is that I'm trying to upgrade too many beta levels in one go, but I can't find any intermediate betas in Apple Developer Downloads.
What should I do?
"This copy of the Install macOS Big Sur Beta application is damaged and can't be used to install macOS."
I've downloaded it three times now, and got the same thing each time. I deleted the first two copies I downloaded, to make sure.
An obvious possibility is that I'm trying to upgrade too many beta levels in one go, but I can't find any intermediate betas in Apple Developer Downloads.
What should I do?