MacOS Big Sur get stuck on 12.18 GB of 12.18GB

Hello all, I'm having an issue while trying to update from macOS Mojave to Big Sur,


The update goes until the end 12.18 GB in total. But after download ends the "Install" button never appears, is just getting stuck on 12.18GB.


I tried twice in normal mode and one time in safe mode and behavior is the same (see bellow)


Can you help please?


Macbook used : MacBook Pro 2019 Touch Bar 15"

MacBook Pro 15″, macOS 10.15

Posted on Nov 13, 2020 7:35 AM

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Posted on Nov 13, 2020 1:47 PM

I found a way.


MacOS Updated now. :)


Current Behavior:

  1. When trying to download the software occurs the issue described on the main topic.


Explanation:

  1. Maybe apple will solve this later but I have noticed the following:
  2. If the download is on 12.18 GB and you restart the computer, you lose all downloaded data and you have to start from the beginning to download it. So, do not restart the Mac.


How to solve it:

  1. After download reaches 12.18GB and get stuck, disconnect internet connection and then download will stop.
  2. Connect network again and click "upgrade" button (you will notice that the download is not anymore at 12.18GB but is not also starting from beginning maybe it will be half downloaded and starting from this point).
  3. And than after some time will get stuck again and you do the same 1 and 2 steps above and you will see that the download is growing little by little I did this 3 times.


It seems that for some reason the download progress bar is not giving the right percentage/results or for some reason is saying that is everything downloaded but is not.


(Sorry for my bad English is not my native language)

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37 replies

Nov 15, 2020 8:16 AM in response to hamiltonfrommaputo

Did repeated attempts work for you? I am up to about ten tries, and I'm not noticing anything different about my 12.18 stuck points. I can imagine there is one computer system at Apple serves up the final bit of data and that system is overloaded or not working. A better system on apple's part would be to give us a message that things are overloaded and to come back later rather than tease us with a partial download.

Nov 16, 2020 4:21 AM in response to Littlecheez17

Thank you. I appreciate it, and thinking of this problem two ways 1) assume that a certain percentage of times it might work, 2) the other scenario is there's something particular about my situation that ALWAYS makes it appear to stop at 12.18, hang, and error out. My sample size is now about 25 total on two separate machines (2018 Mac mini, and 2018 MacBook Pro). So far, all stuck.

Nov 19, 2020 10:46 PM in response to wadefrommd

I've tried this fix probably 10 times. Every time I attempt to stop the download process and then restart it, it still says 12.18gb and the download bar looks identical.


I have not gotten the update to install yet, and I've been working on this for hours (exercise in futility I know and I've been doing other things too, but still...) - Apple PLEASE get this fixed.

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MacOS Big Sur get stuck on 12.18 GB of 12.18GB

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