macOS Big Sur update 11.1 bug

[ITFRANCE]

Hello,

Our machines can not pass Big Sur update in 11.1, the update stuck indefinitely on the "Preparing macOS Big Sur 11.1 Update..." .

https://appleinsider.com/articles/20/12/18/macos-big-sur-update-bug-is-causing-issues-for-mac-system-administrators

Others with the problem? Is there a way to fix it?

Thank's

[donmontalvo]

We saw the same issue the day 11.1 came out.

It worked fine the following day.

[ITFRANCE]

The problem still persists on my side on the macs enrolled in JAMF .. Indeed the process com.apple.MobileSoftwareUpdate.UpdateBrainService high on CPU all the time when I try to pass the update. My only solution is to start and run the update in safe mode for the moment.