[Q] Add Right-To-Left language

Hi everyone!
I have verizon moto x device (xt1060), with 4.4.2 android firmware (locked bootloader).

Is there any way the to add RTL (Right-To-Left) language to the system languages list? (like persian, hebrew, etc..)
When I use 3rd-party apps such as "morelocale 2", The result is incomplete: Most of the text remains in English, and also display problems related to the Right-To-Left thing.

I know that in xt1052 version (European), those languages are exist by default in the system languages list.
(It's even possible to install official firmware of this model on my device?)

Thanks!