Sierra Bootcamp Info.plist

Hey Guys!

This is my Problem:

So I just installed Mac OsX Sierra on my iMac mid 2011 and wanted to install Windows 7 as a second operating system.

But there is one big problem. Internal DVD drive is broken and you can’t install windows with a external DVD drive..

So I tried to modify the Info.plist from the Bootcamp Programm. But there was no tutorial for Sierra.

The tutorials I tried didn’t work..

Has someone did this under Sierra and maybe can help me? :)