1 Step:
•Extract it & copy recovery.img to sdcard
Step 2:
•Download & install Rashr-Flash Tool from playstore.
•Open it & Allow root permission
•Take backup of current Recovery
Step 3:
•Install recovery from sdcard
•Swtich off your device
•Now go to recovery mod by pressing(volumr up+home+power) buttons.
Enjoy!
Credits-Novafusion