Another great news! The freshly baked official MIUI 9 Global ROM 7.8.18 Beta has been just released and now available for download through official Xiaomi sources. How great it is to get new releases even before the planned date! Both versions for MiFlash / fastboot and Recovery installation are available.
Download MIUI 9 Global Beta 7.8.18 for Redmi Note 4X Snapdragon
Please, pay attention that this is a beta version, so it might possible to have some bugs or minor issues. By installing MIUI 9 Global Beta you take all the responsibility for your actions. Remember to make all required backups of your current system.
Find more information at http://en.miui.com/thread-750272-1-1.html
MIUI 9 Global Beta 7.8.18 for Redmi Note 4X Snapdragon (RN4X, HM4X, Mido)
MIUI 9 7.8.18 Global Beta | Android 7.0 | Recovery / System | Download
MIUI 9 7.8.18 Global Beta | Android 7.0 | MiFlash / fastboot | Download