Reset Neoware Eon CA2 to factory defaults?

Today while updating a Neoware Eon CA2 (running Windows CE) the thin client locked up and can no longer boot or be seen on the WAN. It just hangs when power cycled.

I know if you can get to the configuration screen you can reset it to factory defaults, but needless to say that is not possible here.

Is there a key combination to reset the device to factory defaults? An internal switch, etc?

I spoke with HP (who now owns Neoware) and they said the device was no longer under warranty and that they would not tell me how to do it…though there was some implication it could be done.

Anyone know how? I’d really appreciate it….