A Detailed video guide tutorial is down in messages
Follow these steps:-
1.Download the given TOOLKIT ZIP and extract it on your PC.
2.Connect your UNLOCKED redmi note 4 to PC and make sure usb debugging is enabled in developer options.
3.Now run the tool and enter password - rootmyredminote4
4.Now click any key on the toolkit to start the flashing process, the tool will automatically flash TWRP RECOVERY and boot into TWRP mode. (Wait until it boots completely and do not press any key on the toolkit menu..)
5.Now when your twrp homescreen appears, press any key on toolkit in order to copy SUPERSU and NO VARETY zip(s) to your phone's internal storage.
6.Just install the two zip files from twrp and your phone will be successfully ROOTED.
NOTE : I was on the latest stable rom (MIUI v184.108.40.206) while making this video, and I've also tested this method on developer rom v 7.4.20, so I recommend you to be on the latest stable one whichever is present at your time of rooting.
Do COMMENT below if you are facing any PROBLEM.
I will try to reply as fast as possible.
Download Link is also down in messages
GUYZ HIT THANKS if you like my work