use this program (s1fwx 3.1):
http://www.mympxplayer.org/s1fwx-31-df417.html
First download newest version of s1fwx from this page and extract the archive. Then connect your mp3 player device to your computers usb port and wait until it gets detected. Now doubleclick the extracted file "extract.bat" or run "s1fwx f dump.bin" from the windows commandline console. Skip the disclaimer by pressing space and select the drive your player gets mounted to. (eg. if detected drives displays "<x>" then choose drive "x:" by pressing x) Now s1fwx should start extracting your firmware, this may take arround 10 seconds. If all went well and no error gets displayed it will display the content of the extracted firmware file as it was readden from your player.