Just trying to update my MacBook Pro 2018 from macOS High Sierra to macOS Big Sur. Fails repeatedly at 13 minutes with this error. "The operation couldn't be completed. (PKDownloadError error 8.). Have tried all recommendations, no luck. Help.
Just trying to update my MacBook Pro 2018 from macOS High Sierra to macOS Big Sur. Fails repeatedly at 13 minutes with this error. "The operation couldn't be completed. (PKDownloadError error 8.). Have tried all recommendations, no luck. (hardwired to ethernet, delete previous install files, etc, etc...Help.
MacBook Pro 15″, macOS 10.13