NSZT-W62G SOFTWARE

Hi for all ....I have a problem about my nszt-w62g it's an mp3 player with touch screen with GPS navigation...etc.
This mp3 have one sd card with maps and I think... software .
I erase by mistake this sd card and now I can't go in setings or in menu , I can use only cd-dvd and radio...
I have software in format .img I burn this image on sd card but....is not working maybe I make something wrong or...
Maybe someone can help me ...