Check out the Yahoo JB3 group. People seem very happy with the new firmware, and no reported bugs. I am using it, and it is working great so far.
A note about the "seamless" recording. It is not absolutely seamless, unfortunately, there is a very small but noticeable break. Taken from Yahoo groups:
When you are finished recording, press the [STOP] button (the one below the
[>] or [PLAY] button). You will see a prompt that says "Processing ..."
while the file is being closed, then "Saved". With OS 1.40.06, when you
press the FastForward [>>] button, the Jukebox will save the current recording
and start a new file with a very minimal gap. Creative claims a "seamless"
transition (implying no dropped samples), however users report between 10-30
samples are actually dropped. This is less than a half-second and is much
faster than a DAT tape change is.