Killed Samsung YH-J70J (Canadian Version)

[Necrochain]

About two years ago i got a Samsung YH-J70J for christmas. A few days ago i put WHAT WAS THOUGHT to be a firmware upgrade onto it and when the update completed, all was left was a white screen constantly. Is there any way of "flashing" the memory on the player or wiping the HDD? Yes i've tried to format it via vista and XP, yet it doesn't work, therefore its basically DEAD. Also i can't move files onto the player, so "flashing" the memory seems to be my only option.

Thanks in advance;
Justin