Put it on a memory stick or USB HDD, then reboot, press DELETE to go into the BIOS and use the ASUS EZ FLASH 2 utility under TOOLS, you should then see the BIOS on the "filemanager" just enter on it and it will confirm that it is either a newer BIOS or the same version and overwrite it! It should then automatically reboot, press enter again to go into the BIOS...
Under BOOT/Boot Setting Configuration is an option to enable Full Screen Logo, pick that! Save & Exit
that is just a great work.
I also have a P5B Deluxe but i dont know how to set that .rom file as my splash screen.
Could you explain it to us SticMAC?
Is there a possibility of breaking the system if you change the splashscreen? (Everything runs fine now -> never touch a running system )