Created attachment 17691 [details]
Sample to test
Open and build the sample app attached in Xamarin.iOS.
App builds and runs without error.
MTOUCH: error MT1305: The binding library 'FakeFramework.dll' contains a user framework (FakeFramework.dll), but embedded user frameworks require iOS 8.0 (the deployment target is Bolts.framework). Please set the deployment target in the Info.plist file to at least 8.0.
The app has a binding that contains a native reference to a 'fake' framework. (fake as in a framework that contains a static archive. Not a dynamic framework.)
Dynamic frameworks are only supported in iOS 8 or later, however fake frameworks should be allowed in earlier versions of iOS.
Here is the commit for the workaround that could be removed in Facebook if and when this patch lands.