configuring 3-button Xiaomi mi-2 headset on other devices

Mar 29, 2013
i have purchased Mi2 headset and Xiaomi mi-2 phone on the same day from different sellers.
My phone order was canceled but headset was delivered

now I have Nexus 4 phone and Xiaomi Mi-2 headset.

The problem is that only 1 of 3 buttons work on nexus. How do make all 3 buttons work?
I've tried installing "headset controllers" but none of them recognize these 2 side buttons!

Should I install MIUI ROM - will it work then?

Additionally when I click on play/pause button i receive:
"headset controller conflict detected" message but the command goes through (play/pause working OK)..