Got my new KDL-50W685A last week, tried Miracast from my laptop with windows 8.1 and it worked perfectly. However the TV updated its firmware 2 days ago and since that Miracast just displays black screen. The connection is setup properly , both the TV and the laptop is connected. I get the sound out from the TV. But the screen is black. I have re-setup the connection, reinstalled the widi drivers on the PC and taken the latest windows 8 updates but it did not solve the issue. Miracast from my android phone is working properly though.

Anybody here that has experienced the problem? Do you know a solution?