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macOS 15 Sequoia on Unsupported Macs Thread

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The first post of this thread is a WikiPost and can be edited by anyone with the appropiate permissions. Your edits will be public.
@macpro_mid2014 Here is a screenshot of everything in XProtetCheck, except the very bottom date info. The canceledPlugin messages are gone, but I have a couple badsignature messages. I don't recognize either one. I do have a couple things instead that monitor input though. Logi GHub, and OpenEMU, and Steam, and Gog Galaxy
Logi Options+ might as well, but everything I have installed are from known developers.
Screenshot 2025-09-06 at 7.32.15 AM.png
 
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MacinMan said:
@macpro_mid2014 Here is a screenshot of everything in XProtetCheck, except the very bottom date info. The canceledPlugin messages are gone, but I have a couple badsignature messages. I don't recognize either one. I do have a couple things instead that monitor input though. Logi GHub, and OpenEMU, and Steam, and Gog Galaxy
Logi Options+ might as well, but everything I have installed are from known developers.
Click to expand...
The log looks good (like the ones on my Mac). You can ignore those BadPluginServiceSignature messages. They are temporary.
Regarding turning XProtect on/off, I don't think you should pursue this further. The timeouts are not persistent and XProtect is essential to maintain the security in macOS, specially for us who run our Macs with some SIP flags disabled.
This is a link which explains a bit about XProtect:

Protecting against malware in macOS

On devices with macOS, malware defenses are structured using the followingApp Store, or Gatekeeper combined with Notarization, and XProtect.
support.apple.com support.apple.com
 
macpro_mid2014 said:
The log looks good (like the ones on my Mac). You can ignore those BadPluginServiceSignature messages. They are temporary.
Regarding turning XProtect on/off, I don't think you should pursue this further. The timeouts are not persistent and XProtect is essential to maintain the security in macOS, specially for us who run our Macs with some SIP flags disabled.
This is a link which explains a bit about XProtect:

Protecting against malware in macOS

On devices with macOS, malware defenses are structured using the followingApp Store, or Gatekeeper combined with Notarization, and XProtect.
support.apple.com support.apple.com
Click to expand...
Sounds good, as far as SIP, I had considered disabling it on a fully supported install as well, so I could have full system file access so I can modify anything on the system I needed, or wanted to. As far as XProtect warnings, it seems like people on supported machines have had issues too, based on the Apple support communities.
@macpro_mid2014 is Xprotect still supposed to automatically update under OCLP as well? I had to manually update it the last few times. I think there was one or two times it didn't auto update under (supported Monterey) either. So trying to find out what's related to running an unsupported OS, vs just apple issues.
 
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MacinMan said:
Sounds good, as far as SIP, I had considered disabling it on a fully supported install as well, so I could have full system file access so I can modify anything on the system I needed, or wanted to. As far as XProtect warnings, it seems like people on supported machines have had issues too, based on the Apple support communities.
@macpro_mid2014 is Xprotect still supposed to automatically update under OCLP as well? I had to manually update it the last few times. I think there was one or two times it didn't auto update under (supported Monterey) either. So trying to find out what's related to running an unsupported OS, vs just apple issues.
Click to expand...
It automatically updates itself if you wait for a day or two of Apple's release.
Sometimes, when I boot the Mac it gets updated, but not always.
 
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macpro_mid2014 said:
Today, Dr. Oakley published a summarization on XProtect. Here's the link if you want to read.

eclecticlight.co

Security data updates in Sequoia and Tahoe

Three XProtects, and one of them installed in two different locations. How they’re updated, and how you can ensure your Mac keeps up to date with them.
eclecticlight.co eclecticlight.co
Click to expand...
Very useful info. Thanks, at the end of the article though, it sounded like SSV was expected to be in place for the updates to work as expected.
 
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After some mature deliberation and as I have to be in two countries, back and forth, I've retired the Mac Pro 5,1 and instituted a Mac mini 8,1. Now to work out, how to run Win 11 on a USBC NVMe. :)
 
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So I am told/I read your post again - no, no Tahoe, it's doing 15.6.1 well and even started the iPhone Mirroring without being asked.

...but I was also told, I can take my Win11 NVMe ssd, from the PCIe card in the Mac Pro 5,1, and then put it into a USB C ext enclosure and it would 'just boot' on the Mac mini 8,1.

Doesn't seem to be the case. Now I'm looking to install WIN 11 fresh, on the NVMe/USB C drive.

Can't get bootcamp to do its stuff on an external drive, and the 500Gb internal drive is too small for my needs.

I've tried Windows Install (see image below) with no success.

Onwards :) any ideas or tips appreciated.

ss.png

...
 
MacinMan said:
My iMac doesn't support above Monterey for the host OS, but Ventura and Sonoma will run in a virtual machine which is a supported install by Apple where OCLP isn't.
Click to expand...
Hi
you write that you don't use OCLP, but instead a VM supported by Apple. Could you please explain what kind of VM this is and what exactly you did with Sonoma to make it supported?
I am looking for an alternative to OCLP, as it is not supported with Sequoia WebGL in Safari, which leads to some massive limitations. I use vmWare Fusion. I also have an iMac Late 2015.
Thank you in advance.
 
Stubbyhobbs said:
Hi
you write that you don't use OCLP, but instead a VM supported by Apple. Could you please explain what kind of VM this is and what exactly you did with Sonoma to make it supported?
I am looking for an alternative to OCLP, as it is not supported with Sequoia WebGL in Safari, which leads to some massive limitations. I use vmWare Fusion. I also have an iMac Late 2015.
Thank you in advance.
Click to expand...
I currently have OCLP running on this iMac late 2015, and WebGL works here. It is true, I was going to keep Monterey as the host, and run Sonoma in a VM, but I ran into some limitations such as iMessages not working in the VM, they used to, but Apple must have changed something, and I couldn't send messages anymore, even though iCloud was signed in without issues from the VM. As far as the browser, if you have issues with Safari, use Firefox, or Chrome, they both work, and don't have the limitations of Safari. I never used Safari as my main browser, so for me, I've always used Firefox, or Chrome. Did you go to this site: https://get.webgl.org and check to see if you saw the spinning cube in Safari? I just checked again after reading your post, and I saw the spinning cube, which means WebGL is working.

Also, do you need something specific that no longer runs under Monterey? Firefox, and Chrome still both Monterey, so you still have current browsers. In my case, I could go back and stay there for a bit more because after running Sonoma, and now Sequoia for about a month, or 2, for day to day use I really don't gain anything worth running an unsupported OS for. I will say having the latest OS is nice, but currently for me not needed, so if you're in a similar situation consider what you need vs want, and decide from there. Also, consider that a VM may be more limited than OCLP when it comes to graphics related things e.g. I don't think WebGL works in Safari either, under a VM, even with ParaVirtuization enabled (enabling 3D, and metal in a macOS VM)

I hope this has at least given you some items to consider, and helps.
 
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Thank you very much for your thoughts. They help me to reconsider a few things. First of all: No, the spinning cube does not appear on my screen.

Safari is my main browser. Despite my best efforts, I have never really been able to get used to Firefox or Chrome.

Do I need the latest operating system? At first glance, no, but at second glance, possibly yes, since I use Adobe Creative Cloud. Monterey is the minimum requirement for many newer generation programs, but it is often described as insufficient. Ventura seems to me to be a compromise with OCLP, as the WebGL cube appears there. That probably means I have to downgrade.

iMessage is also very important to me. If that doesn't work, a VM is out of the question.

Thanks for the help in making my decision.
 
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Stubbyhobbs said:
Thank you very much for your thoughts. They help me to reconsider a few things. First of all: No, the spinning cube does not appear on my screen.

Safari is my main browser. Despite my best efforts, I have never really been able to get used to Firefox or Chrome.

Do I need the latest operating system? At first glance, no, but at second glance, possibly yes, since I use Adobe Creative Cloud. Monterey is the minimum requirement for many newer generation programs, but it is often described as insufficient. Ventura seems to me to be a compromise with OCLP, as the WebGL cube appears there. That probably means I have to downgrade.

iMessage is also very important to me. If that doesn't work, a VM is out of the question.

Thanks for the help in making my decision.
Click to expand...
You're welcome. I learned the Adobe Creative suites years ago, but I don't use any of their software now. When I took broadcast, I learned Final cut studio. I use iMessage as well, but for me, having it on the computer is more of an accessibility feature than a requirement, meaning in my case, because of having low vision, having the physical keyboard to send / receive messages makes it easier than trying to type on a touch screen, or use voice dictation. If I was more comfortable using the phone directly for messages, I'd switch to Linux on the mac completely because I've been able to find alternatives to what Apple offers for just about anything, except the specific features that help me.

I still use macOS native apps, however, I have also embraced open source, and cross platform solutions for many things too. There are pros and cons to each one, and neither is a perfect solution for everything.

I can say this though, I am someone who likes retro computing, but also understands needing to be able to have current updates as well. With my mac being no longer supported by Apple has been somewhat of a good thing. I can't just go and install the latest OS like I used and it's made me slow down and really think about, do I really need it, or am I just doing it out of habit. There are some apps I use, that like older versions of macOS over newer, for performance reasons. They haven't been updated in quite a while.

So yes, I can understand both sides, needing the latest, but also maybe slowing down a bit.
 
MacinMan said:
You're welcome. I learned the Adobe Creative suites years ago, but I don't use any of their software now. When I took broadcast, I learned Final cut studio. I use iMessage as well, but for me, having it on the computer is more of an accessibility feature than a requirement, meaning in my case, because of having low vision, having the physical keyboard to send / receive messages makes it easier than trying to type on a touch screen, or use voice dictation. If I was more comfortable using the phone directly for messages, I'd switch to Linux on the mac completely because I've been able to find alternatives to what Apple offers for just about anything, except the specific features that help me.

I still use macOS native apps, however, I have also embraced open source, and cross platform solutions for many things too. There are pros and cons to each one, and neither is a perfect solution for everything.

I can say this though, I am someone who likes retro computing, but also understands needing to be able to have current updates as well. With my mac being no longer supported by Apple has been somewhat of a good thing. I can't just go and install the latest OS like I used and it's made me slow down and really think about, do I really need it, or am I just doing it out of habit. There are some apps I use, that like older versions of macOS over newer, for performance reasons. They haven't been updated in quite a while.

So yes, I can understand both sides, needing the latest, but also maybe slowing down a bit.
Click to expand...
I read your reply with great interest. I also have a visual impairment and, as a very visual person (including as a photographer), I have to reorient myself. You're right—it's probably time to rethink and question cherished routines.
I also find that I much prefer some of the old programs. That's simply because of practiced workflows.
Best regards and all the best to you.
 
Last week I manually installed 24G217 (RC4) on my rMBP10,1 via OCLP 2.4.1 (create installer option) but not yet offered any newer updates OTA.
But there is Safari 26 Dev preview offered. Weird:

Screenshot 2025-09-10 at 16.55.35.png

OCLP today only offers 15.7 RC5 24G219.

In the past OTA have never downloaded on my MB (would always get stuck).
I always had to use OCLP to download the full installer and run it from /Applications.
 
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MacNB2 said:
OCLP today only offers 15.7 RC5 24G219.

In the past OTA have never downloaded on my MB (would always get stuck).
I always had to use OCLP to download the full installer and run it from /Applications.
Click to expand...
Normally this is not necessary. OCLP starts automatically when there is an update of macOS.

The main question is: is WebGL successfully activated in Safari 26 Dev with macOS 15.7? Could you check this please?
 
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