Well, sorry, but there's no such thing as a ROM/Kernel that you can flash on your Alcatel OneTouch 5020N. I'm not sure what you mean by Chinese/Japanese script. The 5020N is the MetroPCS phone, and it's all in English (unless you chose one of those languages on the setup). I've got 5 of those (5020N's) in my house and none of 'em are in an Asian language.