If you don't want to wait for the next version of macOS Big Sur (which will be released to the public this autumn), it is possible to download the beta version of macOS 11 right now. The developer beta is available and the public beta will launch any day now.

There is also a way to install the developer beta of Big Sur on your Mac even if you aren't a developer, although there are risks associated with doing so. Read on for more information about getting hold of the macOS Developer Beta Access Utility.

In this article we will show you how to get your hands on the macOS 11 Big Sur beta now!

Is it safe to install the macOS beta?

Before we start, a word of warning...

By its nature a beta has the potential to be unstable. Therefore it's not advised that you install it on your Mac if you are relying on it. If you have a second Mac that isn't mission-critical then install it on there. We strongly recommend that you don't risk all by making it your primary macOS. 

If you don't have a second Mac there are a couple of ways you could run macOS 11 on your Mac without running the risk of losing data or finding your Mac stops working:

We discuss the safety of the macOS beta and the risks you might be taking in more detail here.

When will the Big Sur beta be available?

  • Developer beta: 22 June 2020
  • Public beta: July 2020

Apple lets developers get their hands on beta versions of its operating system early so that they can make sure that their software works - and so they can use new tools in the next version of the macOS to enhance their own programs ready for launch when the final version of macOS is ready.

The first developer beta of macOS 11 Big Sur was released following the WWDC 2020 keynote on 22 June 2020.

It's not just developers who get an early look, though. Back at WWDC 2015 Apple announced that it was going to let members of the public test the upcoming new version of it's Mac operating system as part of a new, free beta program. That means that anyone can get their hands on the new version of macOS before it is released to the general public later in the year.

Apple has announced that the first public beta of macOS Big Sur will launch in July 2020. The public betas of iOS 14, iPadOS 14 and tvOS 14 all launched on 9 July so the public beta of Big Sur will be here very soon.

Who can join the beta program?

There are two types of Apple beta program. One for developers who need to test their apps, and one for members of the public willing to test early versions of Apple's software.

If you want to learn how to join Apple's beta programs read this: How to become an Apple beta tester.

If you want to be a public beta tester, you can sign up to join the Apple Beta Software Program here. There's more information on signing up below in the article mentioned above.

If you're after the beta because you are an Apple Developer this is where you need to go to enroll in the program - here. We have more information on signing up in the 'How to become an Apple beta tester' article.

Big Sur beta

How to prepare for the beta

Apple gives clear instructions about how to prepare your Mac for the install on the Enroll your Mac page.

First Apple advises users to make a backup of their data and files before installing any beta versions of macOS, stating. You can find out how to use Time Machine to back up your Mac. We also have a round up of suitable backup solutions.

You'll need to have the latest full version of macOS installed and we'd recommend at least 15GB of available space because the macOS 11 beta is 9.56GB. (We always recommend that you have 10% space free on your Mac at any time, so if you don't have that expect problems!)

How to get the macOS Big Sur developer beta

Here's how to download and install a beta version of macOS on your Mac.

If you haven't yet registered as a developer you need to enroll in the program - here.

  1. Go to developer.apple.com
  2. Click on Discover > macOS > Download and sign in with your developer account or Apple ID.
  3. Click on Install Profile to download the new macOS Developer Beta Access Utility to your Mac.
  4. Go to Downloads on your Mac and click on the new macOS Developer Beta Access Utility to open it.
  5. Double click on the macOSDeveloperBetaAccessUtility.pkg and the installer will run.
  6. Once new macOS beta is installed Software Update (in System Preferences) will check to see if there are any updates. Click Update and the latest version will download.
  7. You'll see a prompt to install the software, click on Continue.
  8. Agree to the Ts&Cs (more on them below).
  9. Click Install.

How to get the macOS Big Sur beta if you aren't a developer

You could try out macOS Big Sur beta right now, even if you are not a registered Apple developer, but be aware of the risks.

We recommend that you wait until the public beta arrives in July, but, if you want to take your chances and download the macOS beta access utility from a third-party site this is possible. Doing so is a risky business, though.

Various websites are offering the profile required to install the developer beta as a free download. For example, BetaInstaller.com offers the profiles required to download the macOS beta. You might also be able to get the iOS 14 beta from one of these sites - again, we warn against it, but there is more information here.

If you need another reminder of why it's not a good idea to download the betas this way, here are a couple of reasons to steer clear:

  • Apple does not support or control these sites and could decide to take legal action against these sites and their users.
  • We cannot provide any guarantee that the content found on these sites is harmless. Downloading is very much at your own risk.

We recommend that you become an official Public Beta tester. Find out how to become an Apple Beta Tester here.

However, if you're undeterred in your potentially dangerous mission, here's what you need to do to install the macOS beta is you aren't a developer:

  1. Open the website on your Mac and find the link to download the macOS beta profile (on betainstaller.com you'll find the link here).
  2. Download the profile (you'll need to confirm on your Mac that you want to allow the download).
  3. Open your Downloads folder and click on the macosDeveloperBeta16AccessUtility.DMG file.
  4. Now click on the macosDeveloperBeta16AccessUtility.pkg.
  5. A wizard will open indicating that it will guide you through the steps to install the software. Click Continue.
  6. Click Continue again and then Agree to the terms of the software licence agreement.
  7. Now click Install.
  8. Enter your password click on Install Software.
  9. When the installation of the profile is complete open System Preferences on your Mac. And click on Software Update. It will start to check for updates and eventually you will see the message that MacOS Beta is there to download. It's 9.56GB.

Please note: Beta software is not yet final and may contain errors that lead to crashes or data loss. In addition, apps may stop working because they are not designed for the new macOS. Therefore, you should always back up your data before installing any beta software.

How to get the macOS Big Sur public beta

Follow these steps to install the public beta of macOS Big Sur:

If you were already running the Mojave Public Beta or the Catalina Public Beta you'll find the new macOS beta as an upgrade via Software Update. Just click on Upgrade Now. You may have to update to the latest version of your current beta before you can do so.

  1. Before you install the beta make sure you back up your Mac - if you decide to stop using the beta you will need to revert to this backup version.
  2. Go Apple's beta webpage.
  3. Click on Sign In and enter your Apple ID and password (or Sign Up if you haven't yet - in which case return to the section above for those steps).
  4. Click on Enrol Your Devices.
  5. Click on the macOS tab.
  6. You'll have backed up your Mac, as we advised above, so now click on Download the macOS Public Beta Access Utility. Catalina beta
  7. The installer should open automatically, but if not, open the download in your Downloaded items folder, it's called macOSPublicBetaAccessUtility.dmg. Double click on the dmg file. 
  8. Go through the steps to install it, including signing in to the Feedback Assistant.
  9. Once you have downloaded the Beta Access Utility you will be able to download the beta via Software Update (which you can get to by clicking on the Apple logo).
  10. Depending on whether you are using Catalina, Mojave, High Sierra or another version of macOS, you will either see Software Update prompting you to download the Public Beta, or the Mac App Store will open on the macOS Beta Page. Click on Download and the public beta version will download.You'll be able to continue to use your Mac while this takes place (it took over half an hour for us).
  11. Once the beta has downloaded you will see an invitation to install it. When you click to install you'r Mac will shut down, so finish what you are doing as your Mac will be out of action for another half hour or so.
  12. Finally your Mac will restart.
  13. Click on Continue.
  14. Sign in with your Apple ID and password.

How to update macOS beta versions

You will receive a notification when the next update to the beta is available.

Updates will be available via System Preferences > Software Update.

How to send feedback to Apple

Should you come across an error or a bug you should use the Feedback Assistant app to provide feedback to Apple. Launch the app and follow the appropriate steps, selecting the area about which you're providing feedback and then any specific sub-area. Then describe your issue in a single sentence, before providing a more detailed description, including any specific steps that reproduce the issue. You'll also be able to attach other files.

You'll also have to give permission for the Feedback Assistant app to collect diagnostic information from your Mac.

It won't always be obvious whether something is a bug or just not as easy to use as you might have hoped. Either way, if your feedback is that something appears to work in an illogical way, Apple will want to know that.

If you are having trouble with a third party app you can let Apple know by reporting it through the 3rd-party Application Compatibility category in the Feedback Assistant. However, we'd suggest that you also provide feedback to the app's developer who will no doubt be grateful.

Public vs developer preview - what's the difference?

The public beta is not the same as the beta being released through the developer program. it is likely that developers will receive more frequent updates including new features not in the public beta. 

Will I be able to update from macOS beta to the final version?

Beta users will be able to install the final build of the OS on release day without needing to reformat or reinstall.

Can I talk about the beta publicly?

According to Apple and the license agreement all beta testers must agree to, the beta is "Apple confidential information". By accepting those terms, you agree not to discuss your use of the software with anyone who isn't also in the Beta Software Program. That means you can't "blog, post screenshots, tweet, or publicly post information about the public beta software."

However, you can discuss any information that Apple has publicly disclosed; the company says that information is no longer considered confidential.

How to downgrade from the macOS beta

You can always revert to an earlier version of macOS, though depending on how you back up, it's not necessarily a painless process.

Start by making sure the data on your drive is backed up, then erase the drive and install the latest public version of macOS. When you first startup your Mac you can use the Migration Assistant to import your data from the backup. Here's a more detailed tutorial on downgrading from the macOS beta we also have a tutorial on downgrading to an older version of the Mac OS.

Read all about the changes coming in Big Sur and how they compare to Catalina here: macOS Big Sur vs Catalina: Will it be worth the upgrade?