Help with my S1Mp3 board chip ATJ2091N

[lsizquierdo]

I have a mp3 player with a chip ATJ2091N, 2GB NOFM, with telbook

I think that it should use a FW 9.x.x and yesterday I found this version 9.0.50, aparently work perfectly, but my player hasn't FM but the FW is designed for FM, if you try to use FM tell "HARD ERROR", I know what's meas that error, all the interface work perfectly and can read from the memory chip archives *.txt but when I try to play some music the player restart and other problem: the recording option when you press the button to rec the time of recording doesn't change.

Some body can help me?, I think that the FW that I should use is FW 9.0.50 version...
Sorry for my bad English.