Here is Android 7.1 LineageOS Redmi Note 3 Download.This guide will help you how to install Android 7.1 Nougat Cm14.1 or LineageOS step by step easily on your Redmi Note 3.Thanx to minz1, Senior Member of XDA for this Custom Rom.
Now you can enjoy the latest Android 7.1 Nougat on your smartphone.Now Download the Android 7.1 Nougat unofficial LineageOS For Redmi Note 3. You need a Custom Recovery like TWRP to Install CyanogenMod 14.1 or LineageOS for Redmi Note 3
This will work on Redmi Note 3 , Don’t Try this in Any other device.
Charge your phone up to 80% or 70%.
Backup your current Rom before doing this step using TWRP or CWM or any Custom Recovery.