I followed this: http://support.apple.com/kb/HT1939
Unless Apple is being typical Apple and denying the existence of things again, the 2002 QS needs no firmware update.
http://support.apple.com/kb/HT1395
The Quicksilver 2002 has 4.3.3f2 at the moment.
The Digital Audio has 4.2.8f1.
*Edit
In the event that it clears things up, I am not having problems with large drives on the internal PATA. In fact I have not even tested it yet. I was just saying that I was excited about having it at first and was now disappointed because if this SATA card does not work in the QS I have no reason to use the QS board over the DA board.
Aside from being able to use larger drives without partitioning and/or OF workarounds or extra drivers, the bare QS and DA boards have pretty much the same thing to offer me.