How to increase the spin speed on an electronically controlled machine?

Has anyone ever tried to 'upgrade' their electronically controlled washing machine by hacking the firmware? I have an Ariston machine with 1200 rpm spin cycle. The same machine seems to be available with a higher (1400/1600 rpm) spin cycle for a higher price. AFAIK the motor and drum are identical between these machines so the differentiation seems to be rather artificial and marketing-inspired. As this machine is fully electronic (LCD control module on the front, motor/program control unit in the back) it should be possible to hack the firmware to get the machine to behave like its more expensive brethern.

Has anyone tried something like this (with any brand, not just Ariston (Merloni))? Did you succeed?