Few months back, the OEM rolled out MIUI 8.5.3 Global Stable ROM update for Mi 4i. If your device is running on this build with locked bootloader and stock recovery, you will get the MIUI 9.2.2.0.LXIMIEK OTA (over-the-air) update. Other users can download the Recovery or Fastboot ROM (link below) and install manually as given below.

Highlights of MIUI 9.2.2.0 for Mi 4i:

How to Install MIUI 9.2 Global Stable ROM on Mi 4i

Recovery Method (requires stock recovery)

  1. Download MIUI 9 Global Stable ROM V9.2.2.0.LXIMIEK Recovery ROM [HERE] and save it on your phone’s internal storage.
  2. Launch the ‘Updater’ app on your phone.
  3. Tap the setting icon (3 dots) at the top-right corner and select ‘Choose update package’.
  4. Choose the ROM zip file you have just saved on your phone.
  5. The flashing process will start and this will take some time to finish. Fastboot method: If your device is running older MIUI version or custom ROM:
  6. Download MIUI 9 Global Stable ROM V9.2.2.0.LXIMIEK Fastboot ROM [HERE]
  7. After downloading the ROM, follow this installation instruction. Once the installation process is finished, reboot your device the new version. (Source – MIUI)