Most ASRock bioses don't even standard AMI bios recovery it is removed to save space not to sure about newer ones though.
Used my P5Q deluxe board to flash chip. That was hard Anyway BIOS size is 8 Megabytes, so standard AMI bios recovery is obsolete. Requaries some china language skills. I tried to find any OEM desctops by asus, dell etc on p67 motherboard and with windows OEM license, but all they has non uefi bios. If i'll find some UEFI bios with slic from manufacturer, i'll send it to you, hope that helps.
did you try another one ,asus slic? cdy24115 no tell me he how to mod this bios,waiting yr result i need feedback to him,thk