This site has all the rockchip firmwares. You need to use google translater as it is all in chinese. You will need to find your player type among the myriads of name brand players listed.
http://translate.google.com/translat...&hl=en&ie=UTF8
Also this site has rockchip firmware but as well as using the translater you will need to look up their model number to see which type player the firmware corresponds to and if it looks like your player.
For instance DEC has a player that is exactly like the Teclast C260 so I am sure the odds that the firmware will convert is pretty high.
http://drivers.mydrivers.com/drivers-302-firmware
Perhaps if someone can find the time they can match up players and firmware and start a thread just for matched rockchip firmware.
Dave
PS Updated the second link