Fair point @akoj, I'm not seeing where there is an official update and if it's performs anything like how 10 performed on the Ativ SE I would advise against it. Have you seen anything bigger than the 16GB for the mi4?
Well if u have the 10 already build all u need to do is change the manufacturer and model name to the Nokia icon (rm-975 I think) and it shud update without an issue