Lightbulb [Q] Nexus 5 D820 - Unlock CDMA for China

Hey guys,

Patrik here again with another stupid questions, one of my customers bought the D820 module (which I almost never deal in) to be able to use it in China due to it has the same CDMA compatibility but soon discovered that you still couldnt get any Bars in China therefor my question is as follows.

Does anybody know how to Crack-Root the phone to make this possible, since it seems only to be a software related issue?