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Security Update 2020-001 for 10.15.7

Earl Urley

Earl Urley

macrumors 6502a
Original poster
Nov 10, 2014
793
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It's about 1.8 GB in size from Software Update.. still in the middle of install, looks like it did a BootROM update as I noted the generic thermometer rush across the screen, then a second reboot to the Catalina porthole screen with 27 minutes remaining..

Nothing was in the readme as usual..
 
Seems to work ok, BootROM updated on my 13-inch rMBP 2015 from 424.0.0.0.0 to 425.0.0.0.0
 
my Mac just updated to this. I now get a chime at the start up. Is that supposed to happen?
 
I'm about to run this security update on a 2019 MBP MacBookPro15,3 which before update we have
Boot ROM Version: 1037.147.4.0.0 (iBridge: 17.16.16610.0.0,0)

We'll see where we're at after...
 
Prior to update: Boot ROM Version: 1037.147.4.0.0 (iBridge: 17.16.16610.0.0,0)

After update: Boot ROM Version: 1554.60.15.0.0 (iBridge: 18.16.13030.0.0,0)

It chimes on startup too
 
This security update replaced the classic boot chime with the Big Sur-era sound onto my 2013 iMac.
 
This was a very weird update process, after clicking restart, it stuck for 2 minutes on my desktop, while desktop background was visible and nothing else, and no indication that I have to wait or if it's doing anything!
After a few minutes it finally restarted to update page, in which it was again stuck for about 5 minutes with no indication of how much time remaining (a single progress bar that appeared to be stuck)!
Everything went back to normal after that, and the remaining time to update was shown and progress bar was moving.

It was also a surprise after the restart to suddenly hear a loud chime in the middle of the night.

P.S. I'm on a 2020 Macbook Pro.
 
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I'm having a LOT of problems booting from my external SSD now after installing this on my late 2013 iMac. Holding down the option key whilst booting only shows me my internal fusion drive. The SSD and my Time Machine drive do not show up. When I am in Finder they are accessible as nowmal.

I've reset the NV/PRAM already, hooked the SSD up as the only external and sometimes it shows up and I can boot into it, but after a restart it's not showing up again.. I am out of ideas on how to fix this, any ideas?
 
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macpot said:
This was a very weird update process, after clicking restart, it stuck for 2 minutes on my desktop, while desktop background was visible and nothing else, and no indication that I have to wait or if it's doing anything!
After a few minutes it finally restarted to update page, in which it was again stuck for about 5 minutes with no indication of how much time remaining (a single progress bar that appeared to be stuck)!
Everything went back to normal after that, and the remaining time to update was shown and progress bar was moving.

It was also a surprise after the restart to suddenly hear a loud chime in the middle of the night.

P.S. I'm on a 2020 Macbook Pro.
Click to expand...
It was a very weird update from beginning to end on my 2012 rMBP.
Very stuttery and multi-staged, it seemed. It looked like it got stuck a couple of times. My update was 1.38GB and my boot rom is now version 262.0.0.0.0 but I don't know what it was before.
It also seems to have created an "update" volume as well - just like Big Sur does.
 
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theo1711 said:
Is it safe to install on 2013 Air? Will it brick it?
Click to expand...
Took a little time to install (about~30min) and a few reboots/installation screens, but went smoothly. My 2013 Air has now an updated Boot ROM Version: 429.0.0.0.0.

Great timing since i was thinking of installing my new NVME drive but I would get those sleep issues the old Boot ROM had!
 
Has anyone been able to successfully install this on a mid-2010 MacPro 5,1?
If so, how did you do it?
Is it worth updating? I'm a little concerned about the BootRom change causing major problems.
 
rafboy said:
Has anyone been able to successfully install this on a mid-2010 MacPro 5,1?
If so, how did you do it?
Is it worth updating? I'm a little concerned about the BootRom change causing major problems.
Click to expand...
There's no BootROM change for the 5,1 because the 5,1 only runs Catalina if you use one of the tools to allow unsupported installs.
 
mgroot said:
I'm having a LOT of problems booting from my external SSD now after installing this on my late 2013 iMac. Holding down the option key whilst booting only shows me my internal fusion drive. The SSD and my Time Machine drive do not show up. When I am in Finder they are accessible as nowmal.

I've reset the NV/PRAM already, hooked the SSD up as the only external and sometimes it shows up and I can boot into it, but after a restart it's not showing up again.. I am out of ideas on how to fix this, any ideas?
Click to expand...
Similar problem with my late 2013 iMac, here. I’ve tried reformatting the external ssd and attempted to reinstall Catalina on this drive. The installation doesn’t take and the drive, while healthy and able to store data, will not function as a bootable startup. I’m trying a lengthy Time Machine restore onto the ssd now. PS I read another solution for user who had same problem. After 3x NV/PRAM resets, the external drive was then recognised as a startup source and they could run with this as before.
 
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chrfr said:
There's no BootROM change for the 5,1 because the 5,1 only runs Catalina if you use one of the tools to allow unsupported installs.
Click to expand...
Thanks for the info. That makes sense.
But has anyone been successful in updating to 19H114 on a cMP 5,1? If so, how?
I updated to Catalina with dosdude's patcher, and am using CatalinaOTAswufix.app for updates (Safari, etc.). When I try to install the Security update, it just restarts my Mac and doesn't do anything (it remains on 19H15)

Has anyone tried using DosDude1's macOS Catalina Patcher to try to download the 19H114 version?
 
Last edited:
Software Update shows a file size of 1.76 GB:

Screen Shot 2020-12-17 at 9.44.06 AM.png



Yet the file from Apple's "Downloads" website (posted December 16) is only 1.33 GB in size. Furthermore, it shows macOS 10.15 (not 10.15.7) is required:

2020-12-17_10-27-45.jpg



I'm looking for a direct link to the correct update file.
 
JoeInMilwaukee said:
Software Update shows a file size of 1.76 GB:

View attachment 1696257


Yet the file from Apple's "Downloads" website (posted December 16) is only 1.33 GB in size. Furthermore, it shows macOS 10.15 (not 10.15.7) is required:

View attachment 1696265


I'm looking for a direct link to the correct update file.
Click to expand...
The link you found is for the correct update. Disregard the differences in file size and version; there's only one Security Update 2020-001 for Catalina, and it actually requires 10.15.7.
 
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