Default Faceook 5.2 xap

Hello guys, could anyone provide me with a Facebook 5.2 patched xap? The reason I need this is to install it on the windows phone emulator, I am going to demonstrate an app in the local imagine cup soon, and my app requires facebook authentication and it does that using the facebook app. And as you all know the emulator doesn't allow you to install apps from the store. So if anyone could help me I'd be grateful.