So I just bought 2003 year BMW and there was VDO Dayton mm5000/01 navigation system. I have downloaded new 2014-2015 europe map (That i found in this forum) and burned it on CD (everything was done by given instructions). But when I put disc into the VDO Dayton disc reader, navigation screen shows "No data". I have also tried to put old CD's (and also original ones) that i found in the car, but the problem is the same - "no data".

Maybe you could tell me what the problem is and how to fix it?

Sorry for bad english.