Did you have the trial subscription and, if so, when did it expire? Your symptoms are similar to when mine went thru a major update, but it cleared up after a bit over an hour (except for a complete wipeout of the memory presets). Have you attempted manual tuning to a station?This morning the 8.4 stopped receiving am and fm radio signals. Even the presets are empty. Satellite works (not signed up) on the one channel that promotes you to join. Media from cell phone works also, just no am, fm. Any ideas?