Not an Issue. Just wanted to thank you for your EFI folder details.
I have this Motherboard. I originally created this system for a Hackentosh years ago.
I have since switched to Linux as my daily driver. (Artix Linux running OpenRC init System)
However, after seeing the updates going on in the Mac world I thought I would setup a Drive with the latest.

Running an i5 6600
16 GB ram
MSI AMD 5600XT with 4 Displays
I did have to set the SMBios to macpro 7.1 to get all 4 displays to work and for the actual install to complete. Had an Unable to update firmware error with the macpro 6.1 you had in the conifg.plist file.
I also injected the AtherosE2200Ethernet.kext for the Onboard Ethernet port.

It is so glad to find a z170n-wifi EFI, thank you very much!

I have same MB(same rev1.0), and i5-6500, 2xDDR4 2400 16GB，512GB Nvme SSD (Micron P2), Graphic card is XFX RX560, and also a DW1560 wifi card :)

Problem:

I'v already installed Clover+Catalina 10.13.4 (on Fusion drive 256GB Toshiba SATA+2TB WD 5400rpm) half year ago. And leave it shutdown for 3 months. Once I came back and want to use it, it could not boot the OS (Clover was fine).
[hardware is same except HD and without Graphic card]

So I changed hardware as described in the begging in order to fresh install Big Sure.

I'v downloaded Big Sure .4 version, made install flash disk with this image and your EFI. Everything is fine until booting OS several seconds it stuck and show me a forbidden apple icon.

I have no clue what happened caused Catalina and Big Sure not booting, I've tried adjust BIOS but nothing helped.

Could you please share BIOS configuration? And, do you have any advise to troubleshoot?

Thank you in advance,

Regards,

Adrian