I want to change CSC code on my n910c

Hello everyone,
I flashed my note 4 n910c through odin with the firmware n910cxxu1boe1 witch contain CSC like : ACR, AFG, MAT, ...
I'm from Morocco and i Want to get active CSC code : MAT, but after flashing my device I got XSG.
and I want de change it to get OTA update from my country, I tried to type #272*IMEI code# and it does not work
please help me...