How To Update Android 7.0 Nougat In Redmi Note 4?

Step 1 

Download The Latest MIUI ROM File Download Here 

There Is No Need To Do It Again If You’ve Already Downloaded The Latest ROM File.

Step 2 
Connect Your Device To The Windows PC/laptop Via A Micro USB Cable, And Copy The ROM File Downloaded In Step 1 Into The Folder ‘downloaded_rom’ In The Internal Storage Of Your Device.

Step 3 
Launch ‘Updater' App On Your Device： MIUI 6/7/8：
Click The ‘…’ Icon At The Top-right Corner, Select ‘Choose Update Package’, And Choose The ROM File You’ve Put In ‘downloaded_rom’ In Step 2.
MIUI V5：Press The Menu Button, Select ‘Choose Update Package’, And Choose The ROM File You’ve Put In ‘downloaded_rom’ In Step 2.

Step 4 

After Choosing The Right ROM File, Your Device Will Begin Upgrading. Your Device Should Automatically Boot To The New Version When The Update Is Completed.