ahmedfareed2000, Changing firmware is very risky and could very quickly stop your player from working. At the moment there are no tools that I know of for extracting Rockchip firmware.
You could try translating the chinese web sites through Babel Fish.
http://babelfish.altavista.com/
Just enter the page URL at the bottom and select "Chinese-simp to English" and it will translate the whole page.