This is for anyone trying to update their bios using the Asus EZ Flash Utility.
There is an error in the manual, which says rename downloaded bios file to A8R32-MVP. It should actually be A8R32MVP. After using correct name the new bios installed without problem.
What is surprising is the fact that Asus have released more than 1 update to the manual to download as a pdf file... yet, as far as the english version, they still include the mistake that you have already seen.