Ok, I've backed it up twice so what do I do next?(I've got a nice looking theme I want to install which is in a .bin format) I tried using the LogoDIY app to apply the theme but it asks for an rfw that isn't present on the hidden partition.
This is the theme I want to install:
http://mympxplayer.org/mtmpx-theme-df87.html
I'm not sure if it's compatible with my player or not.
I found out also from the pictures in the firmware download section that mine is a Rockchip RK2708B DXT VX748.