When you say wrong bios do you mean its not running at the correct speeds? I have seen another chap on the forum saying his BFG OC is only running 600 on the core instead of 625.
mines fine tho
EDIT : Having 2 different BIOS versions wont be enough to crash a system in SLI. Have you checked tghe temps as they could well be overheating
Phew, just typed a massive reply and accidentally closed the browser whilst looking for the URL to finish with so.....
That was me. Three weeks ago I fitted my new BFG8800GT OC, bought from a competitor, as they were cheaper and in stock.
When I came to check the clock speeds in GPU-Z, I noticed they were standard, so posted in one of those massive 8800GT threads (either the overclocking or rambling threads - they're a bit big now, but if you search through for my username and Meatloaf, you may catch our discussion and screengrabs)
Anyway, the upshot of it was, is that my card did have a different BIOS to Meatloaf. If I remember, mine ended .04 and his .07.
Also, in subvendor, his was listed as BFG and mine NVIDIA.
I got on the phone to BFG, and they said it was wrong, and I should RMA it.
I asked if they could mail me a new bios, or point me to a website with one on, but they said it would have to be RMA'd.
So... I did it.
What with the stock level problems of the past three weeks, I only got one back on Monday. Very miffed that after 14 days waiting with the competitor, they cancelled my RMA backorder, and just gave me a refund! Crap customer service, I asked them not to, but that's another story.
So, I ordered one from OCUK at the new revised (higher) price and they got stock last Friday, and I got my card on Monday..... as I said, three weeks later.
So, three weeks, and £30 more out of pocket, just because of the principle of not getting exactly what I paid for... not really worth it.
If you wait a week or two though, stock levels should be normal, and you could well get a fast turnaround?
Alternatively, I found this URL this morning, on the OCUK forums, which miffed me even more

After my 3 week wait, and £30 extra charge, I found this
http://www.mvktech.net/component/op...func,fileinfo/filecatid,2262/parent,category/
Yep, the .07 BIOS that Meatloaf has.
So, you could stick with what you have, essentially a bog standard 8800GT, with OC stickers on it.
RMA it, and get one with the proper bios (in fact my new one has a .21 bios)
Or take a chance with the URL above, flash it yourself, and convert your card back to a BFG 8800GT OC.
Personally, if that URL had been available three weeks ago, I'd have done that, but of course, I take no responsibility if you flash it, and it goes wrong somehow
Other lesson learned? OCUK may well charge more than other stores sometimes, but their customer services are also much better!
After this disaster of a customer service from the unmentionable competitor (I wish I could mention them, I'm hardly praising them, I'd recommend never using them again) OCUK are excellent with RMAs and stuff, as I learned last year when I had a batch of faulty 7900GTs.
Anyway, hope this thread helps (inbetween my moaning) and from my perspective, it's nice to read that I'm not alone in getting a BFG 8800GT with the wrong, NVIDIA standard, bios in it!
As I said though, 3 weeks, and an extra £30 later, I'm sorted now

(Just in time for the GTS to come out)
V1N.
EDIT: I found the original BIOS pictures.
Here is the (wrong) BIOS from my first BFG 8800GT OC
Here is the image Meatloaf took for me of his BIOS version
and here is the 8800GT OC that I received Monday
As I said, hope this helps... and don't forget, installing the latest Rivatuner will allow you to EASILY overclock back to the standard BFG 8800GTOC speeds, and well beyond.