FORMAT ERROR. I FORMATTED SONY NW-E002 MP3 PLAYER TO CHECK IF AFTER FORMAT WE CAN RETRIEVE THE

Question

I FORMATTED SONY NW-E002 MP3 PLAYER TO CHECK IF AFTER FORMAT WE CAN RETRIEVE THE SPACE COZ IT IS SHOWING 428 MB INSTAED OF 512 MB NOW I T IS DISPLAYING ONLY ONE THING FORMAT ERROR HOW CAN I RECTIFY THIS PROBLEM