Let’s keep with Custom ROM theme and now you have to check out this list of different Xiaomi Mi 3 and Mi 4 Custom ROMs. Below you’ll find download links for Android 7.x Nougat, Android 6.x.x Marshmallow as well as links to the threads on XDA forum.

Latest Custom ROM for Xiaomi Mi3 and Mi4

Android 7.x Nougat Custom ROMs for Mi 3 / Mi 4

Android 6.x Custom ROMs for Xiaomi Mi 3 / Mi 4