Re: As usual... :(
 

sturedman , You could try an earlier version upgrade tool, some people report having more success by using 3.57 and 3.68. You could also try the Product tool HERE

I am not to sure why you are having the device read\write problem.

Thank you so much for helping, I dunno how I resolved the problem. Now, with which program can I make a FULL backup, and not the dumb.bin I made before?

sturedman,
It is not possible to make a full version of your firmware only a dump. But you can recover your player in 2 stages first by using a full version firmware from the download section then by using your dump. The full version may not recover your player fully but it will allow you then to use your dump.