It is the second time that this hitech 512mb mp4 dies.
The first time was because i tried upgrading it with a non-corresponding firmware. I used the recovery method in this forums and it worked perfectly.
The second time it died for no apparent reason without even being connected to the computer. I followed the same steps and it worked, however, when i tried a 23 minutes long amv file in it, a "format error" message appears after seemingly 2 mins. each time i try it it advances a little more, like 0.5 secs, very wierd. I have not tested music yet, but please help me if you have any idea of how to fix this problem