Problem with my 1gb s1mp3 (mp4) like nano ipod
 

Hi everyone, i try to upgrade my firmware but a failed. my screen turn to black. I was follow some instruction in s1mp3.org and i can upgrade a 3.5.35 merged firmware (Mp-693-5) but nothing change. When i connect my mp4 and try to open the upgrade tool (3.68) say "now is recovery state...." and the screen is not on.

Can you help me please?