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macOS 15 Sequoia on Unsupported Macs Thread

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rehkram said:
rMBP10,1 2012 updated from Sequoia 15.2 + OCLP 2.2.0 to 15.3 + 2.2.0
Click to expand...
Same rMBP10,1 2012 from Sonoma to Sequoia 15.3 here.
Safari has crashed a few times so far, hopefully something that will settle down and stop.
Not something you are seeing?

Edit: I ran Onyx and it appears to have helped.

Maybe we can go to and stay on Sequoia now, delete the Sonoma partitions and Sequoia will possibly
be the last , or last but one MacOS to ever run on our legacy Macs, but we shall see ;)
 
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Not sure if this will help with stability, but I find that running Onyx (latest) maintenance helps clean out prior OS residue and things seem better at least for me (does reboot with the process) -
1738192099454.png
 
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Hello everyone.

Before macOS15.0, I used to update via OTA, but since then, I have been updating with the macOS installer downloaded from OCLP and installed on a USB memory.
This seems to cause fewer problems.

(1) I updated my Mac (MBP 15'retina late 2013, Kepler 11,3, macOS 15.2, OCLP 2.2.0) to 15.3(24D60).
It went smoothly, and the root patch was removed at the first login, so WiFi and UI transparency were lost,
but OCLP automatically detected the patch, so I installed this patch.

(2) After rebooting, WiFi and UI transparency worked normally, and I installed the post-root-patch again through WiFi.
A large number of packages (including Metallib15.3-24D60) were installed, so I rebooted again.

(3) Then, a beautiful login window and a normal desktop were displayed.

This time, the update was very smooth.

Thanks to the OCLP developers!!
 
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I need a developer or someone responsible for OCLP. My late 2015 iMac is having nothing but issues with OCLP a New Problem for OCLP? Sorry for my Bad english and when the Post is in a Wrong Section!



Hello everyone, I’m new here and at my wit’s end.

I collect and restore Apple computers. I upgrade them as much as possible and install the appropriate macOS using OpenCore to keep them usable today.

Specifically, I’m working on an iMac Late 2015 (Model 16,2) with 16 GB RAM. I have two SSDs installed: a standard SATA SSD and another one in the M.2 slot via an adapter. The M.2 SSD is recognized, and everything seems normal so far. Since the iMac natively supports macOS Monterey, I wanted to install Sequoia 15.3 or 15.2. I’ve successfully installed 15.2 on multiple older Macs without any issues.

The Problem:
The installation does not work reliably on this iMac. Normally, my process is:

Download macOS through the app,

prepare a USB stick,

boot from the USB stick,

format the target drive in the Recovery menu, and start the installation.

This has always worked flawlessly – except on this iMac. Either the installation does not start automatically, or it gets stuck. By forcing multiple restarts, I can eventually get macOS 15.2 installed, but if I unplug the iMac for an extended period, it refuses to boot from the M.2 SSD or freezes.

If I install macOS on the SATA SSD, it runs fine, but this whole behavior still seems odd.

Possible Causes?
Is this a bug?

Are additional OpenCore settings required?

OpenCore is set up correctly, and NVMe support is enabled.

After a crash, I only get the standard error message ("Your computer restarted because of a problem"), but no crash logs appear in the macOS Console. but a Panic? (https://pastebin.com/raw/zHVth22g)

Interestingly, Monterey runs without issues, both during installation and in daily use. I’ve thoroughly checked the hardware:
✔ Apple diagnostics show no issues
✔ Both SSDs are new
✔ Thermal paste and PRAM battery have been replaced and tested
✔ PRAM reset performed

A hardware defect is therefore highly unlikely. The issue seems to be related to OpenCore or Sequoia.

Additional Observations:
When booting Sequoia from the USB stick, the progress bar freezes, and all USB ports seem to turn off (mouse lighting goes dark).

I have to press the power button three times before the installer finally loads into Recovery Mode.

During installation (when about 10 minutes remain), the iMac should restart multiple times to continue setup but freezes instead.

I have to manually intervene to get the installation to complete.

Has anyone experienced similar issues or found a solution? 🤔
 
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houser said:
Same rMBP10,1 2012 from Sonoma to Sequoia 15.3 here.
Safari has crashed a few times so far, hopefully something that will settle down and stop.
Not something you are seeing?

Edit: I ran Onyx and it appears to have helped.
Click to expand...
Just confirming I've had no safari crashes here so far.
I only keep a single macOS version partition on the 10,1 at present.
 
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Hey guys, just thought I would toss this question out to anyone who might have experienced this. I updated my Sequoia install USB from 15.2 to 15.3 and when selecting it through the Open core boot loader, it still gave me the prohibited sign. This was on an iMac 17,1. I am remaking the installer now but first completely erased in Disk Utility first vs just letting OCLP update it. Still wanted to let people know this happened to see if it was also a known issue of 15.3 and OCLP 2.2.0, and if I need to wait for an OCLP update. Thanks.
 
OK, just an update to my previous post. I completely erased the usb drive with Disk utility by selecting the root device e.g. the drive brand name itself, not the volume, did a clean format of HFS+ with GPT, ran create macOS installer in OCLP 2.2.0 to create an installer of 15.3. The process was successful, and Open core boot loader even installed to the usb drive without issues. When booting holding option, I select the open core icon that has the USB icon next to it, get the prohibited sign with the apple support link below it as if Open core wasn't even there, and I was trying to boot Sequoia directly. So, looks like I can't try 15.3 on this iMac 17,1. I had created a third APFS volume to install it to, as well so it would be separated from the supported installs. Usually I don't have issues with this iMac, so this is strange. Anyway, just passing on the info and experience.

UPDATE: Well disregard everything in these two posts. I forgot to disable allow native models in OCLP after doing some testing. Doing so and reinstalling the boot loader to the USB resolved the issue. Sequoia is now installed on it's own APFS volume.
 
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I'm also going to do an install of Sonoma in it's own APFS Volume. I have a couple apps that require at least version 14 for the latest version, so doing Ventura is pointless at this point. So I have Monterey as my supported OS, Mojave as a secondary supported OS (for 32-bit support), and Sequoia and Sonoma for Open core installs to test, and Linux as an alternative OS.
 
I want to create another USB for Seq with OCLP on the installer, using 2.3n OTA I have tried 3 times for 24D60 and once for 15.2. each time I get this error. can anyone explain why.
Has anyone else made a USB installer for 24D60 using OCLP/OTA.
 

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rMBP10,1 2012 running Sequoia 15.2.
System Setting offering me to upgrade to 15.3 but previous OTA have never worked for me on this rMBP (downloading just hangs).

Play A: Instead I have to download the Full installer (via OCLP) into /Applications and just run that.
I did the same this time with 15.3 but when running the Installer, I was asked to select the volume to upgrade but was not able to select my Sequoia volume.

Plan B: I have a small 16GB HFS partition that I use as an Installer partition. I use createinstallmedia command to create a Sequoia installer (instead of using a USB drive which is slow):

sudo /Applications/Install\ macOS\ Sequoia.app/Contents/Resources/createinstallmedia --volume "/Volumes/Install macOS Sequoia" /Applications/Install\ macOS\ Sequoia.app --nointeraction

where "/Volumes/Install macOS Sequoia" is my 16GB installer partition.

Then reboot and use OpenCore's boot picker to select the "Install macOS Sequoia" drive to boot which starts the Sequoia 15.3 Installer (technically, it's actually the Sequoia Recovery App from where you install macOS).

Strangely, this time 15.3 Recovery does not allow any WiFi connection. 15.2 had no problems with WiFi.
My rMBP was previously upgraded with the WiFi card BCM94360CS (one of the "Modern Wireless") and that was supported in the Recovery Apps previously.
IMG_5145.jpg


It appears that 15.3 no longer supports the BCM94360CS WiFi module anymore (or OCLP's OpenCore WiFi kext is not compatible with 15.3).

Anyway I managed to over install 15.3 and on reboot, OCLP ran automatically and prompted me to apply root patches for just "Modern Networking" but also there was a warning:
Screenshot 2025-01-30 at 21.30.01.png

That's because I had no WiFi and OCLP could not verify itself. Never had this issue with previous Updates.

The attempt to apply root patches failed:

Screenshot 2025-01-30 at 21.39.02.png

The issue was that OCLP could not download the MetallibSupportPkg for 15.3.

Plan C: Luckily I have an Apple Thunderbolt-to-Ethernet Adapter. I plugged that into the rMBP and started OCLP and this time Root Patching was successful. On reboot, WiFi works fine.

So still trying to work out why the OCLP 2.2.0's OpenCore boot does not support BCM94360CS WiFi in 15.3 Recovery Installer.
 
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peppolone said:
I've been using both OCLP 2.2 and macOS 15.2 for two months, but I still have the issue. Have you found a workaround?
Click to expand...
No, I haven't found a workaround. It just worked with the new versions, but now that I see that you still have the problem even when using OCLP 2.2 and MacOS 15.2, I realize that you were probably talking about syncing between Macs, while I mean syncing between Mac and iPhone. This issue disappeared with iOS 18.2. Several iCloud issues were fixed with OCLP 2.2, such as those with the Find My app. But I never checked to see if bookmarks syncing between my two Macs worked properly.
 
luckyduke23 said:
No, I haven't found a workaround. It just worked with the new versions, but now that I see that you still have the problem even when using OCLP 2.2 and MacOS 15.2, I realize that you were probably talking about syncing between Macs, while I mean syncing between Mac and iPhone. This issue disappeared with iOS 18.2. Several iCloud issues were fixed with OCLP 2.2, such as those with the Find My app. But I never checked to see if bookmarks syncing between my two Macs worked properly.
Click to expand...
I’m talking about the sync between Mac and iPhone (18.3), and it has never been fixed for me.
EDIT: I fixed now with 15.3
 
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Hello, I use the option "Ignore App updates" in setting / app. After I built and install ocpl. But every new version, ocpl offers it. do you know how to Do you know what to do to avoid update proposals.
 
ronton3 said:
I want to create another USB for Seq with OCLP on the installer, using 2.3n OTA I have tried 3 times for 24D60 and once for 15.2. each time I get this error. can anyone explain why.
Has anyone else made a USB installer for 24D60 using OCLP/OTA.
Click to expand...
I was curious when I read your post so I tried building a bootable USB thumb drive for MacOS 15.3 beta 3 build 24D60 using OCLP 2.2.0 and was successful. I did this using my Early 2015 MBP 13 i7 today.
 
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Is it typically required to have to enter safe mode to complete the installation? During the 15.3 upgrade, it froze on the bootup screen, the loading bar was stuck, and it didn't work again until I entered safe mode to apply the patches.
 
Macdctr said:
I was curious when I read your post so I tried building a bootable USB thumb drive for MacOS 15.3 beta 3 build 24D60 using OCLP 2.2.0 and was successful. I did this using my Early 2015 MBP 13 i7 today.
Click to expand...

Thanks for responding: Today I downloaded 24D57 from OSXdaily their latest, to the applications folder, and OCLP 2.3 successfully created a usb installer. I then tried to download 24D60 with OCLP and again the extraction failed. Maybe it is because I have 2.3 instead of 2.2, doesn't seem likely.
 
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