Level 1

19 points

Catalina 10.15.4 Supplemental Update Has Issues

The 8 April 2020 Supplemental Update for Catalina 10.15.4 brought the system down for a few hours. Since the screen only showed a white apple on the screen for the whole time I shut it down and restarted it. I got a thick white circle with a thick white line through it in the middle of the screen, the same size as the apple usually is. Repeated shut downs did nothing. Could not go to safe mode without the circle and line so I went to Recovery Mode, ran the Disk Utilities First Aid and then rebooted again. My screen came up and I was able to sign in. I had a notice that the update was available for installation. I am not going to do that since it appears it is not going to work on my iMac (Retina 5K, 27-inch, 2017). Is this a temporary issue or should I ignore all further updates?

iMac 27" 5K, 10.15

Posted on Apr 8, 2020 7:42 PM

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Jayseph

Level 1

51 points

Posted on Apr 11, 2020 7:13 AM

I am not sure how many people this long post will help, but hopefully it will help some:

I was unsure why my MacBook Pro would install this supplemental update without a hitch, but my one month old iMac would not. Every time I rebooted my iMac, even after a Time Machine restore that seemed to work, I would get the circle/slash symbol and not be able to boot up my machine. After texting Apple Support last night, they advised that I should bring my computer in as it seems like there is a hardware failure. I didn’t see how in the world that would be possible with just a software update and a brand new machine.

This morning, I called Apple Support and talked to someone who was really great. She was very helpful as I discussed the issue. And then we tried something different. I removed all external hard drives and my CD-ROM drive and then booted up my machine. I was shocked to see that it booted up just fine. No dreaded circle/slash symbol. When my machine was back up, I then installed the supplemental update, this time without any issues.

There is one issue that is still there and that is if there are any externals attached when rebooting my machine, it will give me the slash/circle symbol and not boot up properly, but when they are disconnected everything is fine. Obviously, this is annoying and something that needs to be fixed, but at least I know that it is not a hardware issue with my computer and I don’t need it serviced.

Catalina has been a nightmare of an OS. I am hoping that these issues are finally taken care of and that there is a stable system put into place soon.

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69 replies

gregg280

Level 1

8 points

Apr 16, 2020 9:44 AM in response to Robotical

Using a usb 3 type c to type a, I was able to connect an iMac to my bricked Mac mini and use the configurator 2 to revive my firmware. It worked and I have all of my data.

Apr 30, 2020 9:27 AM in response to ShiroAmada2017

I tried, it works!

Just get freaked when I saw this below message. However, just false alarm.

Thank you for the community for sharing knowledge!

Jayseph

Level 1

51 points

Apr 11, 2020 8:00 AM in response to tim01

There was no answer when I asked the question. Rather troubling.

Apple stores are not open, but there are Apple certified service locations that are still open.

I am really wondering about what exactly is going on with externals as now I am trying to update my iPhone and it is just hanging there with the message: "Your Mac is preparing to update the software on this iPhone". It has been that way for about an hour. It seems like this update screwed up external devices being connected. Don't know how long I should just let it hang there as nothing seems to be going on after the download of the iPhone update.

Raicya

Level 10

210,087 points

Apr 14, 2020 6:52 AM in response to tim01

For what it's worth: here installed the supplemental update macOS Catalina 10.15.4 on a MacBookAir (2017 model) on 09 April and on a MacBook Pro (late 2013 model) on 12 April, with both I have no problems.

At the time of the update only an external hard drive that functions as a Time Machine is connected.

Apr 15, 2020 6:37 AM in response to markhowellsmead

Sorry to hear about this man. That's frustrating. I hope you have a backup to fall back to if no solution in the short time.

For me my iMac 4K Retina updated without a problem as some have reported that they had not issue. But my MacBook Air 2013 refused to update. I tried it more than 4 times, it just restarts and update does not apply. This happened I think with the first release of Catalina and as some have stated, I've not had this issue before where any of my Mac won't update.

I've noticed a decline in quality not only on MacOS but on tvOS, iOS, iPadOS and WatchOS. I report every time but am tired. They are just too much that I don't bother anymore. I just make sure I have a backup in case things go south. This is my personal view so you may not agree but  seems to be focussing on money first, quality later from my personal view. So they still value quality but it comes second place after money. The thing is quality will bring in the money but money may not always bring in the quality. I might be wrong but it's what I've observed for some years now. I hope am wrong because I've enjoyed computing since I moved to  since 2008. Anyhow, for my personal computing, they are still by far the best but I have to call them out when I have reason to. My friends and colleagues were surprised. They said to me: Oh, I thought  could do no wrong. I said that was a wrong assumption. Just because I speak good of  and with good reason does not mean that when they make mistakes which everyone does, that I won't call them out. Anyway these are my personal views so you may not agree.

ClassicII

Level 4

1,099 points

Apr 16, 2020 8:58 AM in response to Robotical

Glad you were able to get your Mac back online!

One quick note, I updated my article to explain the data erase thing. With Apple Configurator 2 version 2.12.1 it changed the restore option to reinstall BridgeOS and erase all OS and user data.

You now have to use the Revive option, this option only reinstalls BridgeOS but retains OS and User data.

https://mrmacintosh.com/how-to-restore-bridgeos-on-a-t2-mac-how-to-put-a-mac-into-dfu-mode/

Apr 23, 2020 5:40 PM in response to tim01

i did my 10.15.4 Supplement Update. After the restart it won’t turn on.

anyone try this method? Seem like workable.

Apple please response!

https://youtu.be/ywvDgn7JR_c

May 12, 2020 8:06 AM in response to tim01

MAC cannot be power charged.
pdf. display program would be crashed.

ps. my MAC was bought in 2018. How long will be fixed those bug?

May 12, 2020 8:17 AM in response to Barney-15E

When I both open zoom and display only then the display will crash. I need to make some note and it just happened.

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Catalina 10.15.4 Supplemental Update Has Issues