Hi,
I downloaded the Big Sur update for my 2015 pro retina 15", restarted after it finished downloading to install, but when it booted back up it was still running Catalina? And when I tried to install it again it tried to redownload the update from scratch! Very confused, any insight or help would be very much appreciated.
I downloaded the Big Sur update for my 2015 pro retina 15", restarted after it finished downloading to install, but when it booted back up it was still running Catalina? And when I tried to install it again it tried to redownload the update from scratch! Very confused, any insight or help would be very much appreciated.