BM54 Back with MK4 and Splitscreen
 

Hi

I have a problem after Upgrading from MK3 (16:9) to MK4 on my E39 with a BM54 Back installed. The problem is that the Info and Select Key are not working. The Keys are working when I change with Navcoder from New generation to old generation Radio. But after doing that I don't have the radio splitscreen function. Is it possible to have the Info/Select Keys working and to have also the Radi Splitscreen function?