MIUI 9 Global Beta 8.1.18 ROM Fastboot and Recovery ROM are now available for all supported deices (currently it is suspended for Redmi 4A). If the device is already running on the MIUI Global Beta ROM, you will get the new software update via OTA (over-the-air). Below is what is new in this update and download links for manual installation.

This build (MIUI 9 Global Beta 8.1.18) does not include any new major features. However, Xiaomi Mi 6 and Mi Mix 2 owners can enjoy the brand new Android 8.0 Oreo and its awesome features by installing this build. Changelog for MIUI 9 Global Beta 8.1.18: MIUI 9 Global Beta ROM 8.1.18 recovery and fastboot ROMs are available for all supported devices. If you are already on Global Beta ROM, then you can download the Recovery ROM and install manually. If your device runs on other OS version or older MIUI ROM, you should download and install Fastboot ROM, which will also wipe data from the device.

How to Install MIUI 9 Global Beta ROM

  1. Download MIUI 9 Global Beta 8.1.18 ROM (recovery/fastboot) for your phone from here.
  2. Now follow this installation guide. (Source – MIUI)