How do I flash the original BIOS back?

[hangsung]

Currently, Mod BIOS is installed on my laptop.(http://www.sendspace.com/file/ugh4ki)

Before flashing the mod BIOS, I took a backup with the InsydeFlash(/g command) and it created a backup file.

I wanna get back to my backup bios.

So, rename it and overwrite the ROM file that comes in the mod BIOS flash archive.

When I press START in the InsydeFlash utility, I get an error message "Load file: File may not have EC rom!"

I don't know what went wrong.

I'd really appreciate your input on this matter.