I found a website for this type of player it looks like yours but it has a FM radio.
Pockivision with FM radio
There is one called
"nofm.rfw" in 31 Rockchip firmwares uploaded by harshit in this thread:-
31 Rockchip firmwares
It has the same screen layout and no FM radio it is a Chinese DEC brand, hope this will work for you..