marlsjk , are you having any problems with your player? If it is currently working fine, i'll suggest that you do not do anything to the firmware.
However, if you are trying to recover it, you'll need the Sigmatel Firmware Uploader here
http://www.mympxplayer.org/sigmatel-...der-df230.html
A list of Sigmatel firmwares can be found here
http://www.mympxplayer.org/sigmatel-firmware-dc36.html
But there isin't many.
Do note that the Actions firmware Would Not work with your player.