Hi and sorry for the mix up there, it was just that I had only the post before answered an almost identical post and it sounded just like yours.
Anyway to work. The different way of showing the BIOS version is just because they are different programs I think although I must admit it is a bit confusing. No, it's not quite that simple. What is ? You need to find the correct version for the revision of your card first and download it. I expect there is more than one revision and that is where the trouble starts.
I know a lot of people have a similar problem that is usually cleared up by underclocking the card back to default speeds. I agree that you shouldn't need to do this as the card was sold at that speed but apart form returning it I don't know what else you can do. Set it to the default values and then it should be ok.
You can try asking GGTS but I think that you will get a better answer to be honest.
Just enter your email address and click on the language of choice.
GGTS
http://ggts.gigabyte.com/Please expect several days for a reply.