How can I patch my DSDT table?

[NvidiaUnofficialModder]

I am completely noob at BIOS related things. When I extract DSDT table, it gives an Error while converting from .aml to .dsl with SSDTs. A newbie can do BIOS related things but I failed it. When I install Mojave or Windows XP, newbie's patch applies to OS but my patch does not apply to OS. I mod the bios because I'm extremely bored at noon and I'm modding the bios just for fun.