I have same problem than ok1 has.
Mine player information
2 chips,
1st:ATJ2058W,
2nd:Samsung 616
K9WAG08U1M
PCB0
firmware was used: 3.5.37,
2 steres speakers,
2 upside headspeakers slots,
microphone,
1.5" screen,
IMP player=(contains joystick)
2gb hardboard
http://www.mympxplayer.org/album_pic.php?pic_id=58