Hi. I'm currently running Xiaomi.eu weekly 7.8.24 (MIUI 9) on my Mi Max 2. I was on China Beta ROM 7.8.24, being a Beta Tester. I never tried the Global ROM lately, as I am quite satisfied with both the China Beta and Xiaomi.eu weekly.
MIUI 8 to 9. Firstly, your phone needs to be unlocked. I...