I did the recovery method on a newer board than this one and I had to burn the BIO file to a cd it wouldn't work using the F7 option with usb. It also wouldn't work when I used win 7 to burn the BIO file I had to use a computer with XP, I guess win 7 adds crap to the cd, only the BIO file can be on the cd. I turned the computer on long enough to get the cd tray open then turned it off, pulled the jumper on the bios pins on the board, turned it on and it took about 20 seconds it beeped I shut it off and it worked. I don't know if this will help you but I couldn't get recovery to work any other way.
Thanks for your info. I'll bear it in mind if using Win7 in future.
Unfortunately I am already using WinXP for burning the image. I also created a blank USB Memory Stick to put the BIO file on, and tried DOS, WinXP and BartPE disks to run the iFlash utility from.
The only things that came anywhere near working were the ISO Linux image and the USB Stick, both failed to apply the BIOS image, with errors I mentioned in the original post.