my rockchip mp4 not died but can't update firmware
 

hello
after a good update of my rockchip firmware 1gb in first time,in second time
i try an other firmware but ,it give me a bad screen and i cat see clearly the sreen and i can put any kind of file in my mp4
after i try to update my first good firmware wich i tried in first time with
product tool software the message is: too many bad blocks

can someone help me