extric99
commented
3 years ago Many reasons why iMessage would not work but this is not related to the EFI itself. You can try below and if this does not work I suggest to join tonymacx86.com to get some help there.
To delete/reset Preferences:
Make sure you are signed out of all services and restart before beginning these steps.
Open Terminal Enter sudo rm into Terminal to trigger password prompt if necessary. Paste all at once into Terminal: sudo rm -rf ~/Library/Caches/com.apple.iCloudHelper \ ~/Library/Caches/com.apple.Messages \ ~/Library/Caches/com.apple.imfoundation.IMRemoteURLConnectionAgent \ ~/Library/Preferences/com.apple.iChat \ ~/Library/Preferences/com.apple.icloud \ ~/Library/Preferences/com.apple.imagent \ ~/Library/Preferences/com.apple.imessage \ ~/Library/Preferences/com.apple.imservice \ ~/Library/Preferences/com.apple.ids.service \ ~/Library/Preferences/com.apple.madrid.plist \ ~/Library/Preferences/com.apple.imessage.bag.plist \ ~/Library/Preferences/com.apple.identityserviced \ ~/Library/Preferences/com.apple.ids.service \ ~/Library/Preferences/com.apple.security \ ~/Library/Messages Reboot Hackintosh and check iMessage/iCloud/Facetime
i have the same Config and uses your EFI as Base and iMessage are not working. Send me iMac.zip kindly help in Big Sur