Wojtek

Hi, I see there is a lot of HMI experts on this thread. Please help me undarstand few things... I'm base in Poland (EU) and wanted to convert HMI to have a EU maps and language. After doing researching I figured out that I cannot do that on NA module and have to replace to EU module. So I found one for Opel Insignia (Buick Regal) and used foreign VIN (from EU model) to unlock the HMI module. All programmed via SPS. Guess what? All is working great! I have a EU maps, voice recognition and all other features meets EU specification. So let go for question now because this is not my first and last GM I want to import from USA and convert to EU specs. 1. Do I really need to replace HMI module to EU version to get EU specs? 2. Because I used VIN from the car that has rear A/C and video (my car does not have) I have control icons on CUE screen now for those systems which I don't have. Do I have to find a proper VIN to hide it or may I use my car VIN to unlock EU module and it should work? 3. What is the different in mentioned here "calibration" and "software" and what actually the open source does? Thanks! Woj