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Question

macOS Big Sur update 11.1 bug

  • December 23, 2020
  • 2 replies
  • 4 views

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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

2 replies

donmontalvo
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  • Hall of Fame
  • December 26, 2020

We saw the same issue the day 11.1 came out.

It worked fine the following day.


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  • Author
  • New Contributor
  • January 7, 2021

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.