The Down-low on Updates: What You Need to Know About macOS

As you may know, Apple comes out with a new Mac operating system (OS) every year, and each version is supported from a security and stability standpoint for three years. So, what does that mean for your device?

At Denver Mac Repair, we’re here with some helpful info about the latest macOS, older versions, compatibility, and what to do if you have an older machine that will no longer accept the update. Here’s what you need to know:

TABLE OF CONTENTS

First of All, What is an Operating System?

The operating system is the core, most important software that runs on your computer. It’s in charge of managing the memory and processes, as well as software and hardware. A computer is useless without an operating system. Think of it like the complex traffic control system in a bustling city. The operating system keeps everything moving safely and efficiently, so everybody gets where they need to go—and so your computer is fully functional.

The Latest macOS

The most recently released macOS is macOS 15 Sequoia, released in September of 2024. It offers new features like iPhone mirroring and Apple Intelligence, which is Apple’s version of AI that promises writing and language capabilities, AI image generation and a richer Siri experience. Sequoia is the 21st operating system released by Apple, preceded by these version that you might remember from days gone by:

macOS 14 Sonoma, September 26, 2023
macOS 13 Ventura, October 25, 2022
macOS 12 Monterey, October 25, 2021
macOS 11 Big Sur, November 19, 2020
macOS 10.15 Catalina, October 7, 2019
macOS 10.14 Mojave, September 24, 2018
macOS 10.13 High Sierra, September 25, 2017
macOS 10.12 Sierra, September 20, 2016
OS X 10.11 El Capitan, September 30, 2015

What Mac OS Versions Are Still Supported?

For now, Apple supports the three most recent versions with security and stability updates: MacOS 15 Sequoia, macOS 14 Sonoma, and macOS 13 Ventura. Near the end of 2025, Apple will likely introduce a new OS version and discontinue support for macOS 13 Ventura.

Plus, there’s probably a bigger, more dramatic change coming soon—since Apple transitioned from Intel to Apple Silicon in 2020, we’re anticipating that at some point in the near future, they will stop supporting all macOS versions made before 2020.

How Do I Know Which Version I’m Using?

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Click on the apple icon in the top left corner of your screen and choose “About This Mac” from the drop-down menu. The window that opens will include the macOS name and version number. If you need it, you can also find out the build number by clicking on the version number.

The Best Program Versions to Run on Each OS

If you’re using a macOS from the last three years, (macOS 15 Sequoia, macOS 14 Sonoma, or macOS 13 Ventura), you can seamlessly use today’s most popular apps, including Apple tools and third-party programs. A handful of Apple’s newest features are only available on macOS 15 Sequoia, like iPhone Mirroring, a new passwords app, and improved window tiling.

If you’re running older versions of macOS, you might not be able to use some applications or hardware, which can lead to usability problems; and your computer may become more vulnerable to security risks. We recommend keeping your OS updated if possible.

How to Update Your OS

To update, click on the apple icon on the left corner of your screen. Choose system settings. Click general in the window that opens. Then click Software Update on the right. It will automatically check for new software. If new software is available for your Mac, click the update or upgrade button to install and complete the prompts. If new software is not available, it may already be up to date, or the latest software may not be compatible with your Mac model.

What if My Mac Is Too Old For The Update?

If your computer is over 8-10 years old, it may simply not be compatible with the most recent versions of macOS. In this case, don’t worry—you still have a couple of options:

Buy a new machine from Apple: Yes, it’s an investment, but your new Mac will have full functionality, so you can work, play, game, write, compose, create and do whatever else you like to do on your Mac.

Buy a refurbished Mac from us here at Denver Mac Repair: Every Mac we sell has been fully refurbished, rebuilt, cleaned, and tested and equipped with the latest operating system. Buying a refurbished Mac means a significant savings, with the reliable performance you expect from Mac. We provide a 30 day warranty with purchase, and a six month warranty for an additional fee.

Bring in your existing machine: Let us work some magic on your Mac. Depending on your machine and needs, we may be able to modify macOS to work on older machines that otherwise can’t take the latest updates. We’ll take a look and let you know what we can do.

Visit Us For All Your macOS Needs

If you’re having trouble navigating a new update, running macOS on an older machine, or using the latest apps, we can help! Bring in your machine and let us take a look. We’ll give you a free evaluation and price quote for services. No appointment necessary.

R.89c693cda1cf03ed284d67005922c192 — MacBook Pro

which Apple computer to choose in 2021 — MacBook Pro

Austin Rakowski

23 days ago

I needed to get my cracked displayed repaired on my MacBook. This was my experience with the Apple Store in Cherry Creek: - First go to the store for a diagnostic appointment where they confirmed that my screen was indeed cracked - They order the part and set up an appointment for me to come drop my computer off 5 days later. - Despite having an appointment, I waited over an hour and had to leave due to restraints. They then released the part and I had to start the process over again with a new diagnostic appointment (as if my screen wasn't still broken) With Denver Mac Repair: - Dropped it off at 5:30PM Friday afternoon - Was ready for pickup Monday at 3pm Not to mention they were ~$70 cheaper than Apple. These guys are legends, support local and go here.

Yannek Smith

34 days ago

Great professional care. They provided a lot of attention and care to help us resolve a persistent computer issue (security breach / possible hacking on personal computer). Thank you for going above and beyond and helping us feel safe using home laptop again.

jimmy parkour

34 days ago

Fantastic service at a great price. Guys are super nice and professional!!

Dariel Rodriguez Arias

35 days ago

Truly Exceptional Service After more than six years, I finally got my MacBook Pro back to life—and I couldn’t be more grateful to Denver Mac Repair. The staff was absolutely awesome: knowledgeable, skilled, professional, honest, and genuinely caring. In a world where people with true expertise and integrity can feel increasingly rare, these guys reminded me that they still exist. They didn’t just repair my computer—they woke it back up after six years and brought back something I had almost given up on. That meant a lot to me. Thank you, Denver Mac Repair, for your incredible work and for treating me with such honesty and professionalism. You guys are truly the best, and I highly recommend you to anyone who needs Mac repair!

Carl IPsen

36 days ago

Super helpful and pleasant!

Eric Rysner

40 days ago

All I can say is wow! My son accidentally dropped his iPhone in a river while on a backpacking trip. Turns out his iCloud backup had not been set up properly, and three years of pictures had been potentially lost. The guys at Denver Mac Repair got everything up and running and transferred to a new phone. These guys are awesome, knowledgeable, professional, and their pricing was very fair. Thank you!

Paige Reilly

42 days ago

Incredible neighborhood computer store. My dad worked with one company for my whole childhood, and i spent a LOT of time with him have only found big box stores since, so i've been looking for a space that is as supportive as that business from my childhood....and I found it here! Great technicians, who share information freely and without arrogance, great prices and better location. Love this store

Tom Masterson

43 days ago

I had a great experience, I dropped my iPhone in the hotel pool and it wouldn't turn back on. My cloud storage was full and Mac said they could do nothing about my files. I took my phone to Denver Mac and Christopher said they'd try to get the data off for me, he seemed very positive even said it worked 90% of the time. Two days later I got a call from AJ and he had all my family's vacation photos on a thumb stick and back to me before our flight. Christopher and AJ were both friendly and awesome! I don't know if I'll be back to Denver but if anyone is headed that way with an iPhone Denver Mac is the place.

Nicole Bozarth

44 days ago

Super impressed! My son lost some keys on his Mac book. Apple quoted us $800 and weren’t sure they could even be fixed. Denver Mac repair had it done within hours and we only paid $35. Will definitely be back!

Tomas DeReary

59 days ago

Fast service. Good communication. Would recomend.

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The Down-low on Updates: What You Need to Know About macOS