That's precisely the reason why I use Safari 26.1 for Sequoia 15.7.4 on my Mac Pro 5,1. Use the Mr. Macintosh page to download the relevant installer. You needn't go as far back as 18.6.
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macOS 15 Sequoia on Unsupported Macs Thread
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sorry if the following questions have already been answered, but I wasn't able to find answers with the search.
Running 15.7.4 and OCLP 2.4.1 with default patches on my mbp and seeing a couple of annoying issues:
Are there any solutions to the above? My primary interest in running the latest macOS is to get access to the latest Xcode toolchain, right now it requires macOS 15.6+.
Running 15.7.4 and OCLP 2.4.1 with default patches on my mbp and seeing a couple of annoying issues:
- unable to make screenshots / open the Screenshot app. Could work that around using 3rd party tool Shottr, but it can only make fullscreen screenshot - region screenshot also doesn't work (I can cut it in Preview manually of course).
- Ethernet not working unless I have cord plugged in before booting the mbp, en0 interface is simply missing.
Are there any solutions to the above? My primary interest in running the latest macOS is to get access to the latest Xcode toolchain, right now it requires macOS 15.6+.
kkinto
macrumors 6502
That 26.1 link is dead on Mr Macintosh. Anywhere else to download the installer?
K two
macrumors 68020
kkinto
macrumors 6502
PropClear
macrumors regular
New OCLP 2.5.0n (build date 19.03.2026) can be found and works as expected on all Sequoia machines - FYI
Sven G
macrumors 6502a
^^^ It might indeed be more important to maintain OCLP 2.x for Sequoia, now: Tahoe can wait a little more…
Sven G
macrumors 6502a
… Yes, the new 2.5.0n works as expected. And now I also understand a mistake I made regarding the double password prompt for FileVault: previously, I had said that when building OpenCore with Host Model selected in the OCLP Settings, then there is a double password prompt, one at boot and the other at login; while if the specific model is selected in the Settings, then there is only one password prompt, at boot (as should be): but now I understand why it probably is so… When selecting the specific model in the Settings (in my case, MacBookPro11,3), for some reason Library Validation and AMFI get disabled (I hadn’t realised that before): so this is probably the reason for the different behaviour at boot (and building OpenCore from the specific model with those enabled of course got the double password prompt again, exactly as when building from Host Model). And you definitely don’t want to have Library Validation and AMFI disabled, so I’ll have to live with the double login prompt until this is fixed (strange glitch, BTW, present also after decrypting and encrypting again: the passwords should be in sync, but it looks like they are not)…
Edit: The Microsoft Teams crash at launch was due to inadvertently running with Library Validation and AMFI disabled (see the mistake explained above): now it starts correctly again.
Edit: The Microsoft Teams crash at launch was due to inadvertently running with Library Validation and AMFI disabled (see the mistake explained above): now it starts correctly again.
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Sven G
macrumors 6502a
… While the Homebrew bug with the Swift runtime seems to be stably fixed, also in this new 2.5.0 nightly build (very good): with no more warnings about missing cask quarantine support, etc., but only about being a Tier 2 configuration (which is indeed the case, with OCLP’d Macs).
deeveedee
macrumors 68000
Updated my HackBookPro6,2 (Intel Arrandale CPU, non-metal Nvidia Tesla) to Sequoia 15.7.5 (24G624) and applied post-install patches (Modern Wi-Fi, Nvidia Tesla Graphics) with OCLP 2.5.0n (commit b9df76e). All appears to be working except <Shift> <Option> screenshots. These screenshots still work until I apply the post-install patches. I suspect this is because Apple still has not published an updated KDK for Sequoia
I'm still amazed that this old laptop can run Sequoia and receive updates from Apple. Posting this with Safari Version 26.4 (20624.1.16.18.1). Continuing to keep this hack alive as a hobby and not much else. Sequoia is surprisingly responsive on this 2010 laptop.
I'm still amazed that this old laptop can run Sequoia and receive updates from Apple. Posting this with Safari Version 26.4 (20624.1.16.18.1). Continuing to keep this hack alive as a hobby and not much else. Sequoia is surprisingly responsive on this 2010 laptop.
deeveedee
macrumors 68000
Why can't you build and install a new Open Core EFI with the correct options?
EDIT: Maybe I'm misunderstanding your post?
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JulianStaples
macrumors member
First time updating OCLP Sequoia on my recently-acquired 15" 2012 MBP with the 15.7.5 release today. Which means something new for me compared to my other OCLP machines, as apparently I need to run the update via terminal because the Software Update tool doesn't work with the 15" MBP's GPU?
Am offering slightly longer odds on this completing without a hitch versus me somehow accidentally downloading Tahoe 26.4 and bricking the whole thing. 😅 😬
Am offering slightly longer odds on this completing without a hitch versus me somehow accidentally downloading Tahoe 26.4 and bricking the whole thing. 😅 😬
To be clear, 15.7.5 is now RTM build 24G624 in Software update. Same build as RC5.
Along with 26.4 for all the Apple gadgets.
Now just waiting for someone to say they installed 15.7.6b1 😉
Along with 26.4 for all the Apple gadgets.
Now just waiting for someone to say they installed 15.7.6b1 😉
Daniel Pascoal
macrumors member
Software update should work, it will download the full (large) install due to being patched previoully. After the update you must re-apply the Post-install Root Patch (it should prompt you automatically).
I have the same machine. And if it's like mine it will not work great on Sequoia, the video driver is very buggy, specially when using an external monitor.
Do you see video glitches (artifacts)? Like on these images.
Mine never worked correctly after the 15.4 update. I had to return to Sonoma, it's very fast and stable on Sonoma.
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Sven G
macrumors 6502a
It’s a little difficult to explain… I had discovered that when building OpenCore with the specific machine model selected, then there was only one password prompt at boot (I have FileVault enabled): but I hadn’t seen that when selecting the exact model in the Settings, then Library Validation and AMFI automatically got disabled in the Settings (which is a strange glitch, indeed). If re-enabled, there is no difference between building with specific model and with the host model (default): so having only one password prompt at the beginning must have been because Library Validation and AMFI inadvertently got disabled. The real glitch here is that with the default OpenCore build process I then get a double password prompt, both at boot and at login: which shouldn’t be the case and is indeed strange - but I don’t know why…
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JulianStaples
macrumors member
Terminal download has reached 100%. Now hoping it's doing the usual 'preparing update' magic before prompting for a restart command. I've updated a bunch of OCLP devices before, so I know I'll need to repatch. Just usually do point updates like this straight from System Settings, which apparently isn't possible with the 2012 15" GPU 🫣
Ouch. That's not great. I've not seen anything like that on mine, but I haven't tried it with an external monitor tbf. Had a bunch of problems getting the initial install done (constant 'error preparing the software updater' in OCLP). But once I got 15.7.4 installed and patched, it's been fine. 🫤 (Unless this 15.7.5 update goes badly).
Edit: It didn't go badly. 😀 Minor panic when I rebooted via Terminal and the MBP booted back into 15.7.4 without patches and then OCLP gave the build mismatch error when trying to re-patch. But I tried the update again in Terminal, it found the 15.7.5 download and then rebooted/installed correctly.
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deeveedee
macrumors 68000
It appears (to me) that Apple is not doing the best job of publishing the latest KDKs for macOS Sequoia.
developer.apple.com
KDK for recent MacOS Sequoia versi… | Apple Developer Forums
Sven G
macrumors 6502a
… While OCLP, OTOH, almost always has the latest MetallibSupportPkg package… 😎🙂
I have an iBoot issue on my MacBook Pro 13.2: since the latest Sequoia 15.7.5 (24G624) update, SilentKnight has been reporting: iBoot 529.120.1.0.0; expected 13822.81.10, need to update iBoot firmware.
However, I even reinstalled macOS Monterey on the MacBook Pro, then reinstalled Sequoia, with no success. Can anyone help me?
However, I even reinstalled macOS Monterey on the MacBook Pro, then reinstalled Sequoia, with no success. Can anyone help me?
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Bigwaff
Contributor
SilentKnight doesn't officially support OCLP Macs. Firmware 529.120.1.0.0 is latest firmware for your MBP 13,2 installed w/ Monterey, the latest supported macOS for your model. OCLP unsupported Macs don't receive firmware updates.
Which firmware should your Mac be using? (version 6)
This article lists the firmware versions of Macs which have been successfully updated to run macOS 12.7.6. Apple doesn’t provide an official list of the current firmware versions which should…
eclecticlight.co
skodises
Contributor
Reposted with a few edits from the Mac Pro area, to reach a wider audience that might need to know this important OCLP information. My 5,1 and my newly-minted OCLP 2.4.1/Sequoia software installation are running fine, and are perfectly adequate for my relatively simple needs: I have no complaints so far.
However, my procrastination-driven timing (in waiting for software packages to mature and/or go EOL before adopting them) is impeccable. I installed OCLP and Sequoia 15.7.4 on Saturday, March 21. Yesterday, I went to the OCLP site on OpenCollective to make my donation, now that I'm actually adopting the software. I definitely wanted to support their efforts, which have been unceasing, and very dedicated. And I discovered that they have discontinued accepting donations, because they are apparently dissolving the effort. It would appear that OCLP itself may be going EOL.
Needless to say, this is a very sad development. I waited a little too long to support the effort. I can still capitalize on it, of course, but this is one of the great shareware success stories of the past few years, and I am very sad indeed that I didn't contribute earlier. It would appear that the introduction of Tahoe has effectively killed this effort. I mourn.
And if I'm actually wrong about this, please tell me so. I'll happily eat that crow...
However, my procrastination-driven timing (in waiting for software packages to mature and/or go EOL before adopting them) is impeccable. I installed OCLP and Sequoia 15.7.4 on Saturday, March 21. Yesterday, I went to the OCLP site on OpenCollective to make my donation, now that I'm actually adopting the software. I definitely wanted to support their efforts, which have been unceasing, and very dedicated. And I discovered that they have discontinued accepting donations, because they are apparently dissolving the effort. It would appear that OCLP itself may be going EOL.
Needless to say, this is a very sad development. I waited a little too long to support the effort. I can still capitalize on it, of course, but this is one of the great shareware success stories of the past few years, and I am very sad indeed that I didn't contribute earlier. It would appear that the introduction of Tahoe has effectively killed this effort. I mourn.
And if I'm actually wrong about this, please tell me so. I'll happily eat that crow...
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