1. Unzip the ROM to a folder of your choice.
2. Install MiFlash.exe after installation, restart your PC
Warning Windows 32bit preference.
3. Start the MiFash software and select the folder or the ROM has been decompressed (you must see this)
ROM Officiel Android 5.1
4. The phone must be turned off, no SD card in your phone and unplug your PC, once off the phone only supported on the Volume Up button after 3 seconds connect your device to your PC with USB and 2 seconds release the Volume up button.
5. Press the Refresh button MiFlash software, your device will be seen.
6. Press the flash button, wait for the message operation completed successfully.