@simspos

The key you have generated are the one for "SW.UNL" in Garmin Mobil XT. That key is only to unlock GMXT in a mobile phone, nothing to do with a Garmin GPS unit. This field will always be fixed to MapID 803 and either PID 1 for Garmin Mobile XT or PID 3 for Garmin Mobile PC.

Use the second field at the bottom in the keygen and the generate button there. That's there you get the code for the "Select Map Product" and your MapID, PID, RgnID & VenID parameters.