Dear lfb6 
Let me start by thanking you for the time you took to help me.
I had a hard time understanding the process you have described, but nevertheless I have written the image you provided to the bios chip, and … VOILA… the system started up.
If I can "buy you a coffee" online, let me know
PS - the serial no of the system seems to have been changed, but the system is usable.
Thanks sincerely again