Houston Superbikes (desmoporche on the board) reflashes ECU's and can delete the immoblizer, look around for gauges motogadget, Radical Ducati off the top of my head but check the sponsors motowheels is bound to have something.
what year is your 620? mine's an '02 and the same issue. houston superbikes can only reflash if your wiring harness is from 2004 and up. so now to get a new set of gauges, i have to rewire the bike, get the ecu flashed, and then install the new cluster. seems like a mess.