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My hackintosh took an hour to upgrade to this OSX version. The video resolution was lowered and DisplayPort audio disappeared. They worked fine prior to this upgrade. Instead of reinstall the kexts, I opened terminal and typed sudo touch /System/Library/Extensions sudo kextcache -u / Then...

I mounted EFI partition by typing diskutil mount EFI in the terminal. Then obtained the most recent CLOVER from https://www.tonymacx86.com/resources/clover-uefi-boot-mode-v2-4k-r4428.376/ The CLOVER installation file was saved in ~/Downloads folder. Click on it to let it run.

In my case, I update through App Store. After the update, HDMI sound is lost. The screen resolution change to 2048x1152 from 2560x1440. I copy /usr/standalone/i386/apfs.efi to /Volume/EFI/EFI/CLOVER/drivers64UEFI and restart. The symptom remains. I then updated CLOVER to the most recent release...