Uploaded January 2026 | Updated September 2026, 2 weeks ago

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Are you looking for a way to be able to block the macOS Tahoe Update for your supported or Unsupported OpenCore Legacy Patcher Mac? I will show you two easy ways to block the Tahoe Upgrade to prevent accidental upgrades & problems with your OCLP Unsupported Mac!

UPDATE 3/31/26: Apple changed something or fixed the profile issue. The 90 day profile no longer works. You need to use the 2nd option in this video by using the public beta. The public beta of Sequoia does not have Tahoe in it, so you do not have to worry.

EDIT NOTE: I had a section in the video where I explain why we need to do this and how the 90 day deferrals work. But the video was already long and I needed to cut that part out. Most users just want to get the job done and I understand that.

Why the Tahoe Upgrade needs to be blocked for some users:
Most will say, "Just turn off download and install updates" in system settings Software Update. While normally this will work, upgrades and updates can re enable these settings BACK ON!!! So if you did not check after the update or upgrade, the download setting can be ON! This will then cause the Tahoe upgrade to download and prepare in the background. It's only downloading the upgrade, what's the problem? This is not just a normal Tahoe.app installer, your system is being edited and the updater is preparing an upgrade snapshot. This breaks process BREAKS OCLP unsupported Mac root patches.

90 Day Deferral Profile explained:
The reason why I did not show this way to block Tahoe to anyone is that Apple set 90 days as the maximum amount of days that you could EVER block Tahoe. Example, the release date of Tahoe was September 15, 2025. Once the date hit December 14, 2025 (90 days later) the 26.0 Tahoe upgrade would show up for users even though we have a block profile because the 90 days has expired. You CAN NOT just re apply the profile to get another 90 days. This is why the profile is only useful for 3 months. BUT this changed in 15.7.3. For some reason the 90 day profile is being respected for the entire Tahoe run of updates. This is unexpected for sure, and is a welcome bug/change. The problem is, Apple could change this at any time, returning the original function. If that happens you will all of a sudden see the Tahoe upgrade show up again. I think this may be a OS or SUS/Pallas issue? I will update if this changes. Let me know if you have any other questions.

Imazing Profile Editor Download
imazing.com/profile-editor/download

macOS Beta Signup and install
beta.apple.com

How to add the Beta section to System Settings Software Update
Open Terminal.app
paste and run this command
open "x-apple.systempreferences:com.apple.Software-Update-Settings.extension?action=showBetaUpdates"

How to download the full macOS Tahoe Installer
youtube.com/watch?v=jL5Ir_0GSsg

How to create macOS Tahoe USB Installer Drive
youtube.com/watch?v=92kzSZzkQ7E

Download the macOS Tahoe Full installer from my website
mrmacintosh.com/macos-tahoe-full-installer-database-download-directly-from-apple

How to restore macOS via Apple Configurator 2 and a second Mac video.
youtube.com/watch?v=q-FsB2onSx0

Apple guide for Apple Configurator 2 restore with a 2nd Mac
support.apple.com/guide/apple-configurator-mac/revive-or-restore-a-mac-with-apple-silicon-apdd5f3c75ad/mac

How to download older versions of macOS
mrmacintosh.com/how-to-download-macos-catalina-mojave-or-high-sierra-full-installers

Official Website
MrMacintosh.com

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patreon.com/mrmacintosh

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paypal.me/mrmacintoshblog

Twitter
twitter.com/ClassicII_MrMac

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youtube.com/channel/UCRddzq1GBchvbZqnVkioKnQ