I also have a FS12-TY with motherboard# 0PN94W also. I see here that there has been success flashing a stock Dell BIOS (C99Q3B16) with success installing ESXi 6.0.
Let me add another data point and try to get more information. My FS12-TY came with S99Q3B15 and was able to get to the ESXi 6.0 installer right off the bat. I havent installed it yet, but will try to get to it this weekend. I managed to get my serial number and it turns out that system shows up under Dell's Support lookup (and is still under warranty! Weee!) and has a recommended BIOS update (B23) which comes from the official site. I found the FTP site for all the BIOS revisions for the official C2100:
Product support for PowerEdge C2100
So, I have a BIOS that starts with S99Q. My NIC MAC addresses come back as Quanta, but Linux says my gigabit network device is Intel. So much confusing information floating around. If you look at the official C1100 FTP site:
http://ftp.dell.com/published/Pages/poweredge-c1100.html
you can see that all the official C1100 BIOS versions start with S99C. All the official BIOS versions for the official C2100 start with C99Q. I have a BIOS that starts with S99Q... Confusing? Ugh...Yes.
There are posts from people (who sound like they are knowledgeable) that strongly warn against flashing firmware that is for a different variant of the system
from this thread about the C1100. Even if it is successful, it could be damaging on the wrong hardware. So many different variants out there. Here are the specs from my serial number:
CLOUD, DCS 2100, 1xE5606, 32G B, 12 X 146GB,1xPERC6/I w/Batt , TENCENT A5
I clearly have a DCS system. By BMC states it's an FS12-TY. Whats the consensus so far? How are the DCS FS12-TY systems out there doing with C2100 C99Q3B16 firmware loaded? Any negative results? I just submitted my warranty transfer forms to get support. I plan to hound them for answers on this matter, but wanted to see how the official firmware was treating the FS12-TY in the real world. Or, it there is any other information on firmware support for the DSC systems. I tried to find Quanta firmware and have had no luck, even from Quanta's site. Is there a database for Quanta FS12-TY specific firmware updates?