How can i fix my Samsung DVD-HR753 recorder? ?

hi
my samsung DVD-HR753 with 160GB HDD has prob with Disk try,can't eject,then i try to update firmware(firmware with *.RUF extension) ,but i use wrong firmware,after that unit have't signal,i mean show no signal on tv and show load in unit diplay led and DVD indicator light is blinking.i think device need flash or somthing like that ,i mean clear Flash IC or programing IC with programer but i don't know which one of IC's.plz help me if u have schematic or knowin about main board.i try to take a pic from main board and send it for u.
plz help me
tx