Angular 1.4 to Higher Version

[AngularResearcher]

Below is my project structure. I am looking to upgrade Angular 1.4 to higher version(run 2 versions parallel) using ngUpgrade. I need help with steps and approach.

Project

--app

    Controllers(js files)

Directives(js files)

Filters(js files)

Services(js files)

Views(js files)

app.module.js

Global.asax

index.html

packages.config

web.config