I am not an expert bios modder but once you decompress the exe file 7zip, there is a wph file that opens in phoenix bios editor (pbe). Therefore, I am pretty sure it can be mod it. Your choices are to mod it using pbe or manually mod it. Using pbe is not recommended as it has bricked some computers but other had success using it. Modding manually is a better option but it is time consuming and a little complicated. Both methods are in the stickies.