I haven't been able to google up a way to do this either. I don't have navigation, just normal iDrive. Apparently several companies offer navigation retrofits in earlier model cars (e.g. E90) and those units can display Chinese. There is no such offering for F30 yet. Even if there is one, I don't want to retrofit a complete navigation system just to make the Chinese characters show on iDrive. Anyway, it is quite inconvenient not able to locate the song I want to play on iDrive.