"NBT-EVO Head Unit Cannot Be Swapped Between Vehicles for Testing This Service Information bulletin supersedes SI B65 13 16 dated July 2016.. If an NBT-EVO head unit is swapped into a different vehicle it will enter a locked mode once it recognizes a different VIN. This will set a fault in the Head Unit (NBT-EVO), Fault Code ""B7F87A: Burgler Actively Registered / Component Protection Active"" This will require REPLACEMENT of the head unit to restore operation. To prevent easy re-use of stolen Head units additional features are introduced with 11/15 ISTA/P software to bring NBT-EVO to a higher security level. In NBT-EVO the mechanism is called ""Trusted VIN"""