I am not sure if you can change the region. I think you can upgrade the firmware but using the same region. I could be wrong. Below discussion may help
Mazda 2 MZD - Mazda Connect Firmware 74.00.324 NA N or...
NOTE: THERE ARE SOME PEOPLE CHARGING YOU FOR THESE UPDATES IN RUSSIA or UKRAINE, I NEVER CHARGE YOU, YOU DO NOT PAY FOR NEW FILES, EVER! Yes, this Firmware update is for all Mazda 2s with the following Touchscreen as shown above then Yes you can also have the working and 100 % Genuine Mazda...