flash new rom

[waltermcool]

Hi, I've been trying for serveral days to update the ROM of my Mi3 TD-SCDMA without any success.
It doesn't have the updater app, i've tried installing it from the apk found at miui_MI3_JXCCNBE21.0_47ad702550_4.2\system\app\ but it fails. Also tried the MiPhone app, putting the phone into fastboot mode but MiPhone isn't detecting it at all.
How can I do this?

 

[gabmak]

Sure it isn't a fake?

Inviato dal mio MI 3W utilizzando Tapatalk

 

[waltermcool]

Not sure, could be, someone bring it to me from China. If so, there's no way to flash it?

 

[Jeromy Hoff]

Hi I have a brand new Xiaomi mi3 I got one week ago. It is authentic cause we checked it out, however it did not come with an updater app. I can't update it to miui v5 now. What do I do? I have tried everything already, thank you