If you are a developer, then you will need to know how to download MacOS beta in Mac. Beta version for develops are made available before it is publically made available. The developers can take advantage of the newest features of that update before releasing it worldwide. The developers can modify their apps or different platforms so that can correctly work on new MacOS version.
Beta Software is available only for the members of the Apple Developers Program. A unique developer ID is used to identify them. Before installing beta software on MacBook pro or, you must take backup. Attempt to download and install the software update on MacBook Air could make your device unstable and it may consider as out of warranty.
The beta version would be available to download on your mac only if your mac is running on MacOS X 10.8 or later version. See the full list of MacOS 10.14 Compatibility list
4 Easy Steps on how to Download and install MacOS beta software on Mac or MacBook Pro or MacBook Air
Note: First take backup using Time Machine, Go to the Apple Menu > System Preferences > Time Machine > Turn Time Machine Slide on > Select Backup disk for saving the backup before start Upgrade MacOS.
Step 1: First off, you need to download the MacOS Developer Beta from the Apple Developer download page after you login to your account. Don’t have developer account download MacOS Mojave Profile without Developer Account.
Step 2: Now, click on that downloaded file and follow the pop-ups to install the MacOS developer beta access Utility.
Package file [.pkg] will be download and save on local disk. Run the installer and start downloading the setup file. If this package gives error white, we download MacOS. Restart Mac, Open, and Check-inMac App Store.
Step 3: After installation gets finished it will be presented with MacOS beta in the Mac App Store. There hit the Download button to start the installation of beta.
Step 4: Now, whenever new developer betas will be available. It will show notification in the Mac App Store.
Additionally, if you find any bugs, you can report on Apple Bug Reporter on developer webpage. Moreover, if you have some query in your mind, then you can get some information from the Apple Developer Forums.
This developer MacOS Mojave 10.14 Beta is unstable. You can remove or Downgrade macOS 10.14 to MacOS High Sierra.