if anyone has same model please use this tool
:: S1MP3.de - S1 MP3 Player Firmware Tools - Tools - s1fwx to make a backup of the firmware and post it here.
it is a sigmatel 3504-6 chip.
bootmanager.sb 002.620.65535
stmpsys.sb 007.620.302
resource.bin 007.620.302
usbmsc.sb 002.620.320
thanks in advance.