I was browsing the Chinese Teclast forum today and came across a new tool which might enable editing the Menus/Text/Languages in Rockchip firmwares
However as usual the tool is in Chinese, so I can't really do much with it yet
I've attached the tool and made the translations for as far as I could, maybe someone can finish the translation?
The tool is downloadable from
http://www.bi-design.nl/mpx/menu_en.zip