So I used the Opencore Vanilla Guide, and I have the EFI set up. However, when I boot it and try to install Catalina on an APFS drive, it states that I need to update the firmware and to use macOS Extended. Once it finished the initial install, I booted into it to finish it and it threw an error stating that "an error occurred while verifying firmware." I have the iMacPro1,1 SMBIOS set up and it seems fine. What am I missing?
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