Finding a specific user-updated manual for the Blaupunkt BNO 881 (Part No: 7 612 002 064)
The 4-digit code is typically found on a card in the original vehicle owner's manual. Alternative:
Quick specs (assumed common for Blaupunkt head units)
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"7 612 002 064" filetype:pdf
"BNO 881" manual user manual
Blaupunkt BNO 881 Betriebsanleitung (German version)
If the unit is factory-fitted to your car, it may automatically unlock after you turn on the ignition as the car's computer recognizes the unit. Retrieving a Lost Code: