I'm using the Startech USB - RS232 Null modem adapter cable that I have used before - no computer with RS232 interface. A newer computer than I had last time I ran MConfig, don't know if that [faster computer] can make any difference.

How do I see th FW version?

HD621, G98DH, G68ADV, Bc Acoustiqe ACT A3, 5200C DSP33, NuForce Reference 9 monoblocks, 2x SB3's, Velodyne DD-15 & DD-12 Subwoofers and a Meridian sub.