Depends how much of the information is sent using the CAN bus and how much using the CD changer interface (which doesn't support CD text at all). If it's sent over the CD changer interface then no firmware upgrade is possible (the bus protocol just doesn't allow that data to be transferred), if it's over the CAN bus then in theory a firmware upgrade may be possible - but don't hold your breath!
On a similar theme - why doesn't the MP3 information on the DIS scroll? Seeing only the first 8 characters is pretty useless.
On a similar theme - why doesn't the MP3 information on the DIS scroll? Seeing only the first 8 characters is pretty useless.