tadad1, tha,k you for replying i have connect my mp4 to pc and it appears in device manager as USB device but i don't know what to do after ... i have attemp to flash the mp4 via amv tools update and transfering new firmware (because i have not save the original) it doesn't work i have try with a lot of firmware and each time it say that there is an error please contact me at
bilal1244@hotmail.fr (msn) so that i will show you the problem and show via cam ... thank you to pay attention to my problem it is cool