I have an 850 series with a later model radio, I have the original radio code but not the new one. It now displays "Code Wait" and I know how to reset but I do not have the code. It is a BMW Business CD with the model number 6512-6 909 884, the serial number is BP0273 4 0148907, FD 434 Index 45. I am hoping someone can help, thanks in advance. Rick