Flashing bios using slayer 2.5

I have a new xbox and wanting to install x2.3 chip. Now I am using slayer's 2.5 auto installer. The bios that comes with that are x2 4977 and evox m7. I know that the 4977 will not work, I need the 4979. But will evox m7 work on the latest xbox? If that bios does work, after modding the chip when asked to insert the bios cd, I am suppose to insert the slayers auto installer cd right? Then it automatically flashes the bios of the cd. If so how do I have the xbox flash using the evox m7 bios?