firmware extractor for rockchip/sunplus
 

hello. i'm having problems finding a firmware extractor for my mp4 player.
the mp4 i have is the so-known mp4 with speakers and a lil joystick http://img415.imageshack.us/img415/8...lackani7ac.gif
the firmware version for those mp4 is 9.048 and 9.050
my mp4s uses rockchip n sunplus.
the reason why i need to extract the firmware is because i have only three of them with the proper firmware that allows me to use the 'line-in' jack. but the rest of them have a different software that don't come with that option.
i really couldn't find on the internet a firmware extractor for v9.x.x
so i would like to know if there is such tool for this, and WHHHHEEEEEEEEEREE? i need it asap jeje
thank you in advance,

cecilia.