Navi radio random turn of problem

[maszwa]

I retrofited my X3 2007 LCI with Profession Navigation. The MK4 module was new - and I just put the CD with v31. Everything just start to work perfectly without any GT1 codding. The only problem is that the CD radio module. Time to time (usually every second day) when I leave the car closed and after few hours try to swich on the radio. It seems like to be completely dead - it even dont want to eject CD. I need to reset it with taking out the fuse. First i thought about badly retrofited connections - but I checked them being all right - using my old orginal bussines radio instead. So I thought there's something wrong with new radio software or ... maybe the car or navi should be programed for this new radio. Strange thing is that I even checked this radio with navi computer turn off (taking of the fuse) - And even then - the situation with hanging radio also happend. So maybe navicomputer have nothing common with the problem. Is it possible that codding (navi or radio) should solve this problem?