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I tried to update the macos from the 10.15.7 to the recently released Big Sur. Software Update has dowloaded the installation data and the following popup dialog appeared.

Popup dialog with error

I found in Console's system.log the following message, but I'm not sure if it's related to my problem.

Nov 12 22:58:02 coolomet com.apple.xpc.launchd[1] (com.apple.xpc.launchd.domain.pid.SoftwareUpdateC.1617): Failed to bootstrap path: path = /System/Library/CoreServices/Software Update.app/Contents/Resources/SoftwareUpdateConfigData, error = 2: No such file or directory

I checked that the requested file exists in my system in the given location.

➜  Resources pwd
/System/Library/CoreServices/Software Update.app/Contents/Resources
➜  Resources ls -l SoftwareUpdateConfigData
-rwxr-xr-x  1 root  wheel  42192 22 zář 02:25 SoftwareUpdateConfigData

How can I download the Big Sur from the scratch again? I cannot find the location of downloaded installer. I don't see the usually downloaded installer in the /Application directory.

➜  Resources ls -l /Applications | grep -i install
drwxr-xr-x   3 root  wheel   96 12 lis 22:54 Install macOS Catalina.app
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2
  • Just found that this issue is probably wide-spread: macrumors.com/2020/11/12/macos-big-sur-download-issues
    – vookimedlo
    Commented Nov 12, 2020 at 22:13
  • I'm having the same issue, wanted to join you in solidarity. When I try to manually execute the binary, I end up with the same "file not found" issue
    – jeffhu
    Commented Nov 12, 2020 at 23:31

1 Answer 1

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Along with the comments to the post, this is still ongoing for some per Apple Support Twitter page.

https://twitter.com/AppleSupport/status/1327041964014002178

Apple is saying that the issue is resolved, but an issue still persists on my end.

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