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.