Thank your very much @MeatWar and @Fernando.
Tips that can be helpful:
- If you got message in AFUDOS after /GAN command like:
“Unknown command or option:<NAME OF THE YOUR BIOS>.rom1 - Error: …”
Try shortening name of your .rom and run command again.
Example:H61M-C-0511NVME.rom to H61M.rom - If you want to run AFUWIN, but you dont have OS, try install Windows To Go on USB with rufus, and then run AFUWIN from there.