How to edit .unity3D file in unity web player software?

**I have a project from the client, which is developed in mvc and unity file include in home page, which is rendering web page content in it, But i need to modify the content in unity3D file in locally, what are the steps i need to follow in order to edit that file,

Thanks in Advance
**

It’s not possible to edit unity3d files. You will need to request the original Unity project and make your changes there, and then re-publish.