macOS 15 Sequoia on Unsupported Macs Thread

[smnbldwn]

Not sure if this is the right place to ask but I have Sequoia 15.3.1 running on a 2011 MacBook 8.2. It has the faulty dGPU and I have used the nvram command and then software demux using OCLP to keep it running. When it works, it works great and the software demux has made it run cooler. I have a major issue that it won't fully boot most of the time. When I press the power button, the DVD drive whirs like normal and the small white light comes on but it doesn't progress any further, although the fans start up after a while. When it is in this state, I can still do an SMC reset but not NVRAM. If I persist in hard switch-off and switching back on, it will eventually boot but it is taking longer each time. Has anyone else had this issue and found a solution? Any tips for troubleshooting? This is my most "normal" everyday Mac, all my other ones are older and less compatible with the modern world (although great fun!)

 

[parken]

all my other ones are older and less compatible with the modern world (although great fun!)

apologies for the OT but I need to express all my admiration

 

[amaze1499]

OTA Update to 24D81 done using 2.2.0. No issues. This was the smoothest update and literally uneventful in comparison to many earlier builds, which rendered this machine unusable a couple of times.

Thanks!

 

[winxmac]

View attachment 2491117Runs as intended.👏

You need to erase the drive and re-install.

How can you look at About this Mac and not notice the misspelling?

 

[INK1]

My MBP 11,5 updated to 15.3.2 OTA and my iMac 11,3 updated to 15.3.2 by downloading installer to internal disk. Both without any issues.

 

[Mystere65]

This was a minor update, I'm afraid there will be problems with 15.4 instead.

 

[Portiere]

Installed successfully MacOs 15.4 beta (24E5228e)/OCLP 2.3.0n on my Mac mini late 2012 quad core.

 

[nekton1]

OTA-updated 12" 2016 Macbook (9,1) and 2014 Mac Mini (spoofed to 8,1) to 15.3.2 with OCLP 2.2.0 without problems and even Universal Control is working. Updated supported M2 Mac mini with dual Apple 27" thunderbolt displays and had a weird experience where Display 1 Ethernet connection stopped working and informed me that no Ethernet cable was connected but moved the LAN cable to Display 2 and it came good. No problems with getting black screen after updating this time so perhaps that bug is fixed.

 

[hvds]

This was a minor update, I'm afraid there will be problems with 15.4 instead.

Maybe.
But 15.4b2 and b3 look good on MBP11,1 at least (b1 was problematic).
No success with 15.4 betas on non-metal MBP5,2 so far while 15.3.x was OK.

 

[K two]

You need to erase the drive and re-install.

How can you look at About this Mac and not notice the misspelling?

wtf?

 

[joevt]

wtf?

Seqouia vs Sequoia

 

[Bigwaff]

Watch Mr Macintosh YouTube channel. Very good OCLP tutorials. That being said, while OCLP greatly simplifies the process of installing later macOS versions on unsupported hardware, I don't recommend it for casual or novice end users. Once these users get themselves into trouble, they rarely can get themselves out of it.

The USB hub situation... Apple removed USB1.1 drivers from Ventura + later macOS versions (e.g. Sequoia) which is why Monterey is recommended for your hardware. Beyond Monterey, your keyboard and trackpad won't work during the installation. Hence, the need for USB 2.0 hub and external USB keyboard and mouse. However, once macOS is installed and OCLP post-install root patches have been applied, your keyboard and trackpad should work again.... until you revert OCLP root patches and try to apply any macOS updates.

 

[throAU]

Whether or not OCLP works your processor is extremely old and likely to run into issues with new software soon.

I’d start budgeting for a replacement. Even if it’s something only a few years newer as even the 2011 machines had significant advances in encryption, io standards, etc.

 

[nekton1]

OTA-updated 12" 2016 Macbook (9,1) and 2014 Mac Mini (spoofed to 8,1) to 15.3.2 with OCLP 2.2.0 without problems and even Universal Control is working. Updated supported M2 Mac mini with dual Apple 27" thunderbolt displays and had a weird experience where Display 1 Ethernet connection stopped working and informed me that no Ethernet cable was connected but moved the LAN cable to Display 2 and it came good. No problems with getting black screen after updating this time so perhaps that bug is fixed.

After updating M2 MM yesterday to 15.3.2, I updated iPhone to 18.4 beta 3 today and a few minutes later got a message on MM saying a software update was required to connect to iPhone. I ran it and it took about 15 seconds to complete and now iPhone mirroring is working again. This was normal BUT in the later afternoon I got ANOTHER message offering the SAME software update to connect an iPhone but that could not be downloaded for install — server glitch?

 

[amaze1499]

OTA Update to 24D81 done using 2.2.0. No issues. This was the smoothest update and literally uneventful in comparison to many earlier builds, which rendered this machine unusable a couple of times.

Thanks!

Having said that: Spotlight indexing is broken again. Reenabled via Terminal.

 

[Steve Gosselin]

Having said that: Spotlight indexing is broken again. Reenabled via Terminal.

How to check?

 

[K two]

Seqouia vs Sequoia

The joys of being partially sighted!
better?

 

[Mystere65]

Maybe.
But 15.4b2 and b3 look good on MBP11,1 at least (b1 was problematic).
No success with 15.4 betas on non-metal MBP5,2 so far while 15.3.x was OK.

Does the patcher work with Haswell? I knew it caused black screen

 

[MNissen]

 

[MacRumors3590]

Does the patcher work with Haswell? I knew it caused black screen

on cMP b3 installs and works but after patcher no boot.
cheers

 

[MNissen]

Gents I don't know what b3 or Haswell is in regard to my 4,1/5,1 machine, but I can say, OTA install of 15.3.2 went as expected root patches after, no issues so far, touch wood.

My retina MacBook Pro (non Touch Bar) had to download the 15.3.2 separately and it then went as expected root patches after, no issues so far, touch wood.

Oh, and OCLP 2.2.0 on both

 

[OldMacPro2]

Well, I've got a nice MacBook Pro 15" 2015 "Retina" (MacBookPro 11,5)

Got it used, in really good shape but without an SSD and a bad battery, but was able to get that taken care of for not much money.

Then I was able to get it upgraded to Big Sur and then Monterey, but that was it. Apple pulled the plug on updates.

After reading up on these forums about Open Core Legacy Patch, I finally took the plunge and downloaded it.

After installing OCLP, I was able to download and put the latest Sequoia installer on a usb drive.

Reboot, install, and voila! It's working!!!!

Kind of fun to play with old hardware that's still got some life in it

 

[Macdctr]

I have done this with my 2015 15-inch MBP, my 2015 13-inch MBP and my 2015 11-inch Air with no issues. I currently have MacOS 15.4 Beta 3 installed and running with no issues. Although they are not my main Macs these days, I still use them occasionally and they all perform more than adequately. Yes, it is a shame Apple stopped supporting these solid computers when they can still run their current OS. Glad to see other's doing the same thing with their aging Macs!

 

[macpro_mid2014]

Does the patcher work with Haswell? I knew it caused black screen

It caused issues with b1. But since b2 and b3 had been released, my MBP11,2 (Haswell) is patching/booting without any problems.

 

[OldMacPro2]

I don’t know what the security profile is, using Open Core Legacy Patcher…I’m still doing some deeper dives on that. But as far as performance is concerned, I have no complaints whatsoever. And all the ports that I’ve tried are working.