Apparently it is possible to get the BIONX firmware upgraded. I currently own a PL-250 with CAN-BUS communication system (you can tell by the serial below the console it starts with 2332) and my firmware version is 3.8. The new version (I've read 4.3 somewhere) is supposed to get rid of the vibration when going uphill or downhill. Of course I would be interested in that upgrade.
So far no answer from BIONX after I e-mailed them.
The only BIonX dealer in town has no clue that this is possible (he has 4.0 version and he said that vibration is gone).
Of course if I could remove the 32km/h limit at the same time that would be SUPER! I'm still looking around for a way to do this with new BionX model.
Anyway if anyone has any input ;)