Is the firmware for the 1620 Pro the same as the regular 1620 now? I don't see anything for the "Pro" model on The Firmware Page.
Current firmware for the 1620 is listed as B7U9 there, which I'm guessing is the right firmware.
I don't have the drive yet, I just ordered it from Newegg for $79 - including (in the box!) a 25-pack of 52x CD-R's & a 25-pack of 16x DVD+Rs! Nice bundle