How to duplicate apps/games in iOS 9?

[CyanTeng]

Hi everyone, may I know that how can I duplicate my apps/games in iOS 9? I found this video on youtube, but I can't use it in iOS 9, is that because I missed something? I followed the video's instruction but I done it in computer and I install the "customised" apps with my iTunes. Hope you can help me, thank you.

My phone is iPhone 5 (16GB) without jailbreak, and I do not want to do so.
My Laptop is ASUS brand, running Windows 10.

The video link:

 

[C DM]

Fairly sure that copying software is one of those illegal type of things.