I decided to do a Master Reset on Sync 3 yesterday afternoon around 4pm because I was having problems with I-phones repeatedly disconnecting from Blue tooth. But since the Master Reset, I've had nothing but a black SYNC screen. The Ford badge keeps coming up and disappearing, then black screen again. I've tried power plus right button at same time but no joy. What's going on? Can anybody help? It's now nearly 24 hours since the Master Reset and the screen is still blank. I'm based in Leeds, UK.