Car Stereo FH-X779BT (Indian version)

Hi all,

Last year I purchased Pioneer FH-X779BT for my car. its look very good with ambient color in dash. its sound clarity also too good. recently I'm facing one problem that, it is running all mp3, wma & wav Format. but it is not running any file format with *.AAC or *.m4a ot *.flac.

I've seen in Pioneer website that, Latest version of this product is FH-X789BT and it is running all.

please tell me the solution. shall I upgrade the firmware ? if yes, then where i get this firmware ?