The HISS can be reprogrammed, ask the dealer first as they may need a programmed key to program more. You don't have a key so you don't have the key code either. Maybe find a local ECU and key you can buy?
You might try a HRC ECU; they did race that model.
A forum community dedicated to Honda Fireblade motorcycle owners and enthusiasts. Come join the discussion about performance, racing, modifications, classifieds, troubleshooting, maintenance, and more! Find conversations about your favorite CBR 900 or 1000 series RR models.