Z270 Gaming M3 Modded Bios Request for Coffe Lake.

Hello Guys.
I tried to get a working modded Bios for the use of Coffee Lake CPU.
I have done all steps correctly and slowly by following this Guide: [GUIDE] Coffee Lake CPUs on Skylake and Kaby Lake motherboards
And watching a Video for this Guide: https://www.youtube.com/watch?v=rLs4UUw3Ppg&t=196s

Now where i have the ModdedBios.rom, I can see the modded Bios in M-Flash. When i put the original bios on the USB to try if i see the bios, I see it.
Please help me, how to get the modded Bios for Coffee Lake flashed on my Mainboard from MSI. Im a beginner. But i can follow guides good.