InstallUninsuall Mobile Operating System

I was trying from the last month to install ie reinstall my old Symbian os in my Nokia 5130c-2 Xpress Mobile. But could not. I searched in the net but could not find any. So i try to post a blog. If anyone know please comment. I need in the urgent Nokia people will never tell you how to install or reinstall the mobile operating system. Thats i came here and ask you the question directly through this blog.