About a year ago I wrote a checksum calculator for the Volkswagen RNS 510 navigation unit.

The checksum is a variant on Crc16 and is present either at the end of certain files (eg #CRC16:db1d) or as a special file with the name CRC.16.

The tool is a little exe that takes the filename as the only parameter.


Have fun with it!

RNS 510 Checksum Calculator (1990)