You need to be rooted.

1) Download Flashify, Rashr or any other recovery flashing softwares from the Play Store.

2) Download this file and place it on the phone´s internal storage:
https://drive.google.com/file/d/0BwRnz9Kt-2XxdG9Kal9FTmhOZUk/view 

3) Enter the app you just downloaded and choose Flash Recovery, backup your stock recovery although it is not necessary.

4) Reboot Recovery.

There is an issue with Elife E7 where custom recoveries are not compatible with every version of the OS (kitkat, Jb).
This recovery is compatible with JB, KitKat and upcoming Lollipop.