Bootcamp's "Info.plist" seems to be missing some codes...

I'm running an early 2011 MacBook Pro which doesn't allow me to create a bootable usb for windows, to which then proceeded to configure info.plist thus allowing me to create the bootable usb. After no luck of installing Windows do to MBR-GPT issues, decided to do a clean install of Yosemite. With the clean install the file "info.plist" is missing the "PreUsbBootSupportedModels" that allowed me to configure Bootcamp Assistant.

Any advise on how to solve my issue,

Thanks.