Please, provide more information.
Can it launch the games? Then it's RK26xx-based.
If your player is RK26xx-based, you can't backup a firmware,
but you can play the games :P , which can be created using this tool:
http://mympxplayer.org/rockchip-gdk-...it-df1003.html
(there're only a few games available at the moment)