Hangs up at 85% while "Preparing macOS Catalina 10.15.2 Developer Beta...". Times out with the message "An internet connection is required to install macOS."
I have connected both wirlessly and wired to a solid 250Mbps connection, but the update times out every time. The internet connection is open and stable. Rebooted, ran Disk Utility, but nothing has corrected this hangup.
Any ideas?
Thanks,
Doug
