TWRP
- download from https://dl.twrp.me/ferrari
- enable usb debugging + fastboot install from developer menu
- boot in fastboot
- run this command : fastboot flash recovery twrp-3.1.1-0-ferrari.img
- fastboot reboot, press vol up + power
ROOT
- Download lastest supersu www.supersu.com/download
- And flash it using twrp
Custom ROM
Xposed
- Download xposed-v87-sdk21-arm64-MIUI-edition-by-SolarWarez-20161126.zip
- install xposed and wait boot for a while 20 minutes..
- and xposed-uninstaller-20160829-arm64.zip just for caution