Desperately need help with EFI Bootloaders

I've been following hackintoshshop.com's instructions for installing macOS 12 on my pc (
https://www.hackintoshshop.com/3262/hackintosh-monterey-guide/), so far so good, I've succesfully mounted the installation disk image on a flash drive using TransMac, and I've adjusted my BIOS settings.
But when it comes to step 5, I'm lost. I have no idea what to do to make the flash bootable through an EFI Bootloader.
I'd greatly apretiate any help that could help me have this hackintosh ready asap.
Thanks a lot for your help!

submitted by /u/Hersy
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