Yeah, I would like to know if the English firmwire is compatible with the Chinese R4 and visaversa.. I'm sorry if this is asked before, but I would like to know, because there is a difference of 5dollars between the Chinese and English R4.. Well.. I think I know the answer allready (NO! ) But is there a way then to let it work ? Maybe some little changes in the code ? Or is it the hardware that blocks it ?