Unable to Install Updates Anymore

[brainstormer]

Unable to install updates for the first time. All previous updates went smoothly, not sure what changed this time. Here's what I see when I try to update from the Apple Software Update, after I restart and choose the "Data" drive to boot from:

On the other hand, when I try to update via the stand-alone installer, I get this:

Any idea what could be going wrong please?

Thanks!

 

[Namok88]

Supplemental update != combo update.

It should be applied over the same OS version.

But you can use the 10.15.4 Combo Update (the supplemental is already included)

 

[brainstormer]

Thanks, but still a no-go. The screen freezes after choosing to start from Data. Something about locked files I guess. You can see the error in the screenshot in the Original Post.

 

[Namok88]

Read again what I said.

You are trying to install a "Supplemental" update for 10.15.4 over 10.15.3.

You must update to 10.15.4 first. But like I mentioned, if you use a 10.15.4 combo update, the supplemental update is included in it.

 

[brainstormer]

That's what I meant. I tried with the combo update this time, but the same error comes up when the system restarts and I choose the MacOS Install Data to boot from....

Read again what I said.

You are trying to install a "Supplemental" update for 10.15.4 over 10.15.3.

You must update to 10.15.4 first. But like I mentioned, if you use a 10.15.4 combo update, the supplemental update is included in it.

 

[darrix]

I have the same issue going from 10.15.3 to 10.15.5. Not sure what is happening. I see the same error about locked files.

 

[iPrakash]

i have same issue but i will open clover plist and enable -v flag then problem is sloved

 

[darrix]

how does -v solve the problem?

 

[iPrakash]

how does -v solve the problem?

It work for me 1st 3 try my system can’t install macOS 10.15.5 after than I I enable -v flag aka safe mode then my system install the update.

 

[Namok88]

It work for me 1st 3 try my system can’t install macOS 10.15.5 after than I I enable -v flag aka safe mode then my system install the update.

-v isn't safe mode. It stands for Verbose Mode and will show you what it does when booting up until your GPU framebuffer is loaded.