http://en.miui.com/thread-3831680-1-1.html

DinaDuan
Administrator
Important Announcement About Flashing Mi Phones Manufactured by China!

1. Xiaomi Phones manufactured for Chinese market are not able to run MIUI Global ROM.
2. Xiaomi Phones manufactured for Global markets are not able to run MIUI China ROM.

We highly recommend you to buy Xiaomi Phones via official or authorized sales channels and double check the system infomation before flashing or updating.

Thank you for understanding.

MIUI Team