oskars_lbb, If the player is using 9.0.48 or 9.0.50 firmware then there is no way to extract it yet. A new tool is being developed for these new firmware but no release date yet.
If the player has any other version firmware then you can use s1fwx to extract the firmware.
You can download it here:
http://www.mympxplayer.org/s1fwx-31-df417.html
There is a guide on using it here:
http://www.mympxplayer.org/how-to-ex...dcb7564d8ebd64