How to Upgrade an Old Mac to the Latest macOS | 2025 Updated Guide

Ready, click the button in the top right corner to generate summary
AI thinking...



Want to upgrade your old Mac to the latest supported macOS without using OpenCore Legacy Patcher? This step-by-step guide will show you how to update your Mac safely using Apple’s official method.

In this video, I’ll walk you through upgrading from OS X Mountain Lion to macOS Monterey, but the same method works if you’re running Mac OSX Lion, MacOS X Yosemite, MacOSX El Capitan, macOS Sierra, or macOS High Sierra.

🔹 What you’ll learn in this video:

How to update your current macOS through System Preferences or the Apple Support website

How to deal with App Store or Apple ID issues on older macOS versions

Why you need to upgrade gradually (e.g., Mountain Lion → Sierra → Monterey)

How to find your Mac’s maximum supported macOS using EveryMac.com

Where to download official macOS installers directly from Apple

How to install the upgrade and keep your Mac secure, stable, and supported

💡 Why this method?

100% Apple-recommended upgrade path

No third-party tools or patchers

Keeps your Mac stable and secure

Works for older Macs still running OS X or early macOS versions

✅ Example upgrade paths covered:

Mountain Lion → El Capitan → Monterey

Yosemite → Sierra → Catalina

El Capitan → High Sierra → Mojave

📌 Useful Links (mentioned in video):

Apple Support macOS Download Page
https://support.apple.com/en-us/102662

EveryMac.com – Mac Specs & Max OS Lookup
https://everymac.com

How to Install Google Chrome on an Old Mac in 2025
https://youtu.be/lljqPLpTZ10

⚠️ Reminder: Every Mac has a maximum supported version. For example, a MacBook Pro 2015 supports up to Monterey, but cannot run Sonoma, Sequoia, or Tahoe.

👍 If this video helped you upgrade your Mac, don’t forget to like, comment, and subscribe for more Apple tips and tutorials!

#UpgradeOldMac #macOSUpgrade #OldMacUpdate #MacBookUpgrade #UpdateMacOS.

macOS Tahoe on Unsupported Mac | New updated video | macOS 26 on Old Mac
https://youtu.be/rzD6DhaSu5U

How to Create Mac OSX Bootable USB for Old Mac in 2025 | New Method | Fix All Errors | Works 100%
https://youtu.be/rKO_V-JCXs0

How to create an old macOS Bootable USB Drive in 2025 ( M4 Mac & Intel Mac ) | Works 100%. ( 2nd Different Method )
https://youtu.be/NkpJgN9i3fQ

How to Create a Bootable USB Drive for Older macOS Versions on your new Mac
https://youtu.be/eeUdWRsFJj0

How to download old macOS X installers in your 👉 Application folder 👈 | 2025
https://youtu.be/HWKybcV7RBg

How to Upgrade an Old MacBook to latest version supported (FIXED 2025) | Old Mac OSX To Latest macOS
https://youtu.be/cGz9pvlFJIM

How to download macOS Ventura on any Old Mac | How to Download macOS 13 Ventura on any Mac Computer
https://youtu.be/iciAA-bZ7lY

How to Create an Old version ( Mac OS X / macOS ) Bootable USB Drive on macOS Catalina | 2025
https://youtu.be/ytYFx3ysnFs

How to Create macOS Bootable on Windows | 100% Working | Make Mac OS X bootable USB on Windows 11
https://youtu.be/gCfxamo-puE

How to create macOS Bootable usb drive on Windows 2025 | Make Mac OS X bootable USB on Windows 11
https://youtu.be/mDxJObPpwpE

How to create macOS Bootable usb drive on Windows | Make Mac OS X bootable USB Drive on Windows 11
https://youtu.be/AhMETX7U1EY

How to create macOS Bootable usb drive on Windows | Make Mac OS X bootable USB Drive on Windows 10
https://youtu.be/wpwYtJH4qIA

How to Create macOS Bootable USB Drive on Windows | Create Mac OS X Bootable USB Drive on Windows 10
https://youtu.be/GUOpkDn3T7E

How to Create macOS Sierra or High Sierra Bootable USB in 2025
https://www.youtube.com/watch?v=_6_OqvymXeU

How to Upgrade an Old MacBook to latest version supported (FIXED 2025) | Old Mac OSX To Latest macOS
https://youtu.be/cGz9pvlFJIM

How to Create a Bootable USB for Old Mac OS in 2025 | New Method
https://youtu.be/Sk695tCQICs

How to Create macOS Sonoma Bootable USB Drive on Windows | macOS Sonoma Boot Drive on Windows 11
https://youtu.be/VFyifeNC5mA

How to create macOS Bootable usb drive on Windows | Make Mac OSX bootable USB Drive on Windows 10
https://youtu.be/wpwYtJH4qIA

How to create macOS Bootable usb drive on Windows | Make Mac OSX bootable USB Drive on Windows 11
https://youtu.be/AhMETX7U1EY

How to Create macOS Monterey Bootable USB Drive on Windows | 100% Working
https://youtu.be/aqdQ5a0nFnM

How to Create macOS Big Sur Bootable USB drive on Windows Computer
https://youtu.be/GUOpkDn3T7E

How to Create mac OS X Bootable USB drive on M1 Mac |Creating bootable usb for older OS using M1 Mac
https://youtu.be/h9X0GmRu44k

How to Create an Old version ( Mac OS X / macOS ) Bootable USB Drive on macOS Catalina
https://youtu.be/ytYFx3ysnFs

https://youtu.be/ytYFx3ysnFs

how to create a macOS Catalina Bootable USB drive
https://youtu.be/lnaQu8ofV-s

Downgrade macOS Monterey to Big Sur without any data loss | Downgrade to Big Sur without erasing SSD
https://youtu.be/PovHSr5nxo0

How to Download macOS Big Sur & macOS Monterey
https://youtu.be/DEn-ObGfIrg
Note: Mz Learning is the original author of this video, we just embed it, if you have any questions please contact him via Youtube.

Previous Article F1 25 : RTX 4060 8GB ( Path Tracing Benchmark )

8 Comments

  1. Thank you very much, you saved me , I though I would never scape from
    Yosimite in my pro early 2015 , I update from the link to sierra , then to high sierra to get the NVMe update so I can change the SSD , and after that I jumped to Catalina which is the best OS for the MacBook Pro early 2015 , you saved my computer for another 2 year I hope , now I’ll change the battery , the ssd and the speakers

  2. I have a macbook pro 2015. When i try to update to sierra, it keeps saying “Alert this update requires macOS version 10.12” My mac is currently version 10.11.16 What do i do?