Finding the serial number
Remove your Blaupunkt unit and locate the side serial label. If it starts with BP, C7 or GM, then you can proceed to unlock. For some models, you may require to enter also the part number.
out of 5. Based in 2 reviews
Car radio code unlock Calculators https://softwarediagnosticauto.blogspot.com/2020/02/radiocodeunlockcalculators.html
Is fully free and works!