Join the club, that's exactly what happened to me. In my case I suspect that on day one they installed one of the files, then on day two they installed the other two files. All of the successful posts I have seen showed all three files installing at the same time. There was a post somewhere in this thread that said if you mess it up the only fix is to order a new head unit, so that's what I am waiting on too. It seems to be more the fault of the individual dealer as opposed to Subaru themselves, although the argument could me made that Subaru should have made the procedure more idiot proof.Just came from my dealership with the 504 update.
While I see a full screen apple map, I now have no radio or audio of any kind. Pressing/turning radio button does not work, tried making a call, and no audio from the car. Used the factory navigation and no sound. I checked the sound menu and everything read in the negative. Tried increasing the volume and setting does not stay.
Just called the dealership back and they tell me that they will have to order a new unit. Will take 5 to 7 business days to get it.