I got my Sierra Build running but I can't use iMessage and FaceTime.
In iMessage it says that my contact is not registred
and in FaceTime I just can't klick the camera or phone button.
Is this a known problem or is my system corrupted?
To solve the iTunes video "black screen error" (black video screen;time on 0 sec;no progress) for newer CPUs just install this kext.
1. Download and Install Shiki.kext to /Library/Extensions or /EFI/CLOVER/kexts/...
2. Open Terminal. Set Hardware Video...