<< Solved >> This version Mac OS X isn't supported on this platform!

[8Cores8Threads]

Hello,
I am currently working on getting my friend's mackintosh setup, but cannot even get the installer to boot. Almost immediately after selecting the installer in Clover, I get an error saying "This version Mac OS X isn't supported on this platform!" followed by the Board-ID. How can I solve this?
Thank you,
Eric

Specs:
CPU: Intel i9-9900K
GPU: Sapphire Pulse 5700 XT
RAM: G.Skill Ripjaws V 16GB 3200MHz x4 (64GB)
Motherboard: Gigabyte Z390 Designare

EDIT: Added zipped EFI folder.

 

[Jamesbond007]

Hello,
I am currently working on getting my friend's mackintosh setup, but cannot even get the installer to boot. Almost immediately after selecting the installer in Clover, I get an error saying "This version Mac OS X isn't supported on this platform!" followed by the Board-ID. How can I solve this?
Thank you,
Eric

Specs:
CPU: Intel i9-9900K
GPU: Sapphire Pulse 5700 XT
RAM: G.Skill Ripjaws V 16GB 3200MHz x4 (64GB)
Motherboard: Gigabyte Z390 Designare

EDIT: Added zipped EFI folder.

The RX 5700 XT is only supported with MacOS Catalina 10.15.1 and later. Are you trying to install Mojave?

 

[8Cores8Threads]

The RX 5700 XT is only supported with MacOS Catalina 10.15.1 and later. Are you trying to install Mojave?

Yes I was but the issue persisted without the GPU. Turns out I just had the SMBIOS at iMac19,1 but used a Mojave installer from before that machine launched. Downloaded a newer installer and I’m good to go. Thanks!