Downloaded 12.18 GB in an hour and it got stuck for next half an hour and gave me error "an error occurred while installing this update". Restarted the upgrade again, got stuck at 2.44 GB for 15 minutes. Rebooted my mac and started the upgrade again and got stuck again at 2.44 GB (attaching the screenshot).
MacBook Pro Early 2015 running with Catalina 10.15.7
MacBook Pro 13″, macOS 10.15
Ok got it working and downloaded
These are the steps I did.
Deleted the following:
Go to
Library
Preferences
Delete “com.Apple.softwareUpdate.plist”
Empty Trash
Restart Computer
Select The Apple Top Left
Go to about this Mac
Select Software Update
Ok got it working and downloaded
These are the steps I did.
Deleted the following:
Go to
Library
Preferences
Delete “com.Apple.softwareUpdate.plist”
Empty Trash
Restart Computer
Select The Apple Top Left
Go to about this Mac
Select Software Update
Did you try this ?
Ok got it working and downloaded
These are the steps I did.
Deleted the following:
Go to
Library
Preferences
Delete “com.Apple.softwareUpdate.plist”
Empty Trash
Restart Computer
Select The Apple Top Left
Go to about this Mac
Select Software Update
S_Sayeed wrote:
It asked me for 16 GB of space and I was having 26 GB of space. After unsuccessful attempt, I am left with 20 GB.
It was probably asking for 16GBs more. It requires 35GBs-45GBs.
It started to download now.
This is what I have done .. instead click the download on software update I click the “more info”. Then it goes to Mac App Store Preview page , then it redirected to App Store app, last click “Add”, then the download started …
Kenneth Simon wrote:
290GB free space and still getting this error every time.
Try while in Safe Mode.
Make sure you have approx 35GBs free space.
According to Apple "There is an ongoing issue with an update server for MacOS"
https://www.martinpham.com/2020/11/12/get-macos-big-sur-from-apple-cdn/ I found this from a reddit thread. Downloading now for me, but this IP is actually registered to Apple.
So, I'm finally running Big Sur. took a long time not because my 1Gbps to the internet was slow, but because of the download errors I'm guessing from overwhelmed servers. load seemed to ease by 8PM ET and the download started again at a someone reasonable pace. Errors all afternoon since 1pm ET and constant errors but it seems the load was just too great for their CDN to handle.
Try restart pc and clear nvap
wait up 1 hour and after try again
Resetting the PRAM worked for me...until further notice.
I won't have confidence in this for days to come.
I think the issue is related to apple's servers overload. I have the same problem, but a lot of free space. I tried to update a VM from Catalina to Big Sur and I experienced the same issue.
Haven't tried yet but possibly through the App Store?
-> https://apps.apple.com/us/app/macos-big-sur/id1526878132
**Let me know if it works please!**
"an error occurred while installing this update" while upgrading Big Sur on MacBook Pro Early 2015
