Sideload apps not on App Store

Sideloading history

Sideloading is last enabled in macOS 11.2. Sideloading was disabled in macOS 11.3 beta and in the current macOS 11.3 full release. If one attempts to sideload an app, the erorr message "This application cannot be installed because the developer did not intend for it to run on this platform" appears.

Sideload using appdb and Rickpactor

1. Visit appdb
2. Click 'Link your device'
3. Enter email address
4. Confirm by clicking confirmation email link
5. Go to System preferences, Profiles
6. Install the 'appdb Device Link'
7. Download and open Rickpactor
8. Enable revocation protection
9. Paste command into Terminal application and press return
10. Search on ​appdb for apps to download

Sideload with an iPhone or iPad

These methods has been disabled in macOS 11.3, these methods only work from macos 11 to 11.2.3.

Apple Configurator 2

1. Download Apple Configurator 2 from App Store
2. Connect iPhone or iPad via USB cable
3. Use Apple Configurator 2 and click Add and then Apps
4. Sign into Apple ID
5. Find app to download, select and Add
6. A message will appear to 'Skip App', 'Replace' or 'Stop' - do nothing
7. Open Finder and navigate to ~/Library/Group Containers/K36BKF7T3D.group.com.apple.configurator/Library/Caches/Assets/TemporaryItems/MobileApps/ and locate the app IPA that has been download
8. Open Terminal and then copy and paste the command sudo xattr -rd com.apple.quarantine
9. Then drag the app IPA after this code (so that the path appears afterwards)
10. Press return
11. Double click on app IPA to install, which will then appear in Applications folder

Sideload without an iPhone or iPad using Windows

https://www.reddit.com/r/macgaming/comments/lc234r/running_genshin_impact_on_an_apple_silicon_m1_mac/glxdfms/?utm_source=reddit&utm_medium=web2x&context=3