Uploaded December 2025 | Updated September 2026, 2 weeks ago

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Did you update to macOS Tahoe and are having nothing but slowdowns, lag, crashing or you just don't like the new look.. then this video is for you. I will show you how to downgrade macOS Tahoe back to macOS Sequoia with this complete step‑by‑step guide. This tutorial covers both Intel and Apple Silicon Macs, ensuring compatibility across all devices. I will walk you through the process safely, with no data loss, so your files remain intact. Whether you’re troubleshooting issues or simply prefer Sequoia, this video makes the downgrade quick and easy. CHAPTERS BELOW!

IMPORTANT NOTE: Apple makes the rules, and the only way to downgrade is to ERASE your drive. MAKE SURE TO BACKUP ALL YOUR FILES FIRST BEFORE STARTING THE DOWNGRADE!

0:00 Welcome
0:17 Step 1. Beginning Notes, a few new changes to Apple’s instructions
0:34 Step 2. Required USB Flash or Hard drive for TM Backup & Installer
0:52 Step 3. Check your Mac’s macOS compatibility before starting!
1:39 Step 4. NEW! Sign Out of iCloud & Find My Mac
1:59 Step 5. Backup your data before we begin!!! We will erase your drive!
2:28 Step 6. Time Machine Backup Steps we will start with
2:36 Step 7. Format 1st USB drive in APFS for Time Machine Backup.
3:28 Step 8. Time to begin our Time Machine Backup with our USB Drive
4:23 Important Note! Tahoe TM is not compatible with 15 (manual copy needed)
5:01 Step 9. Format & Erase 2nd USB drive for Sequoia USB Installer
5:53 Step 10. Download macOS Sequoia Full Installer
6:17 Step 11. Create macOS Sequoia USB Installer Drive
8:04 Step 12. How to boot to USB Installer on Apple Silicon & Intel Macs
8:32 How to boot an Apple Silicon Mac to the Boot Selection Menu
9:02 How to boot an Intel Mac to the Boot Selection Menu
9:21 If you can’t boot to USB Installer on Intel due to Secure Boot Settings
9:49 Step 13. We are at the Boot Selection, now we can boot to USB Installer
10:23 Step 14. Apple Silicon - Recovery - need to erase Macintosh HD
11:17 Step 15. Apple Silicon - Activate Mac Screen & Connecting to a network
11:56 Step 16. Apple Silicon - Starting the macOS Sequoia Installer menu
12:20 Apple Silicon - if it did not start back up to the Sequoia USB (network)
13:00 Apple Silicon - Starting the Sequoia Installer menu screens (again)
13:30 Intel Mac - Process for erasing Macintosh HD in recovery
14:10 Intel Mac - Starting the macOS Sequoia Installer menu screens
14:45 Step 17. Install Complete! Setup assistant & Creating Account
15:39 Step 18. Time to manually restore our backup from Tahoe TM
18:28 Thank You! Let me know if you have any questions.

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

How to create macOS Tahoe USB Installer Drive


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

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

How to install macOS Tahoe Apple Guide
support.apple.com/guide/mac-help/reinstall-macos-mchlp1599/mac

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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