Your player could be a real Onda v747, if so then it is an Ingenics player not a Rockchip, so no firmware partition exists, but then you could use proper Onda firmware and theme that instead.
Check your firmware version in the system setting. :idea:
The latest Onda vx747 firmware is on the MP4nation site:-
http://www.mp4nation.net/forum/viewtopic.php?f=6&t=4834