I made clear cmos and then tried flashback, it doesn't work.I also tried at asusupdate and does not find bios 3501.

I can't update the bios or the biosflashback.and yes I ran the file that renames the bios of the asus crosshair vIII formula CF8.CAP.When initializing the update, STAGE 1 appears on the display and immediately afterwards the message "did not update"....