how to quickly find the match firmwares to your mp3 player.
  

     first, you need find the correct control chips SN.  mainboard SN. and LCD SNhad the search toolbar such as the picture:

       when you input the keywords ,you need choose the main keyworkds ,not tool long.such as the firmwares 280_V12 081230 SPMP3052B -HL171 CAMERA ID 0903 LCD SX.-2.8CPT-932502 4GB  wich you need ,you can input the keyworks :280_V12 
    

      then the firmwares name include the keywords will list ,then choose the LCD SN. match firmwares to download     

      the firmwares must macth to you MP3 player same as the control chips ,main board SN. and LCD sn

     some times the main board SN same ,but the main control chips will be deffirent ,if you upgrade the firmware ,the MP3 player will be can`t work. if the LCD SN.not match ,the MP3will can`t show .