how to change supported language with A2 models?

[mingkee]

If nothing of this works , you can flash with A2-DB3150 Flashing .

Have a nice day

this is much easier to be said than done
currently TM506 only has 2 version (R3CA033, R3DA028), both are T-Mobile version
then flashing won't be solution, that's why I have to find alternative way to add language (not only display, but input and interface) without flashing
you should read my original post before saying that