I START TO UPDATE MY MP4 WITHOUT MAKE A BACK UP OF THE ORIGINAL FIRMWARE (NOW THE SCREEN IS DARK BLUE

). MY TROUBLE IS KNOW THE RIGHT FIRMWARE FOR MY MP4.
THE SPECIFICATIONS OF THE MP4 ARE THESE:
MEMORY: samsung 637 K9F4G08U0A PCB0
BOARD: MP-693C-SL KEY V1.2 KNIFE 051111
4 GB
COLOR:BLACK LIKE IPOD NANO
I HAVE DAYS SEACHING IT!!
GIVE ME SOME OPTIONS TO CHOOSE
(IF I HAVE MORE THAN ONE FIRMWARE THAT CAN WORKS PLEASE TELL ME)
GOD WILL PAY U BACK