You can install our site as a web app on your iOS device by utilizing the Add to Home Screen feature in Safari. Please see this thread for more details on this.
Note: This feature may not be available in some browsers.
USB needs more options...
1. Create a playlist - select multiple Artist/Albums/Songs
2. Recall what is being played when car is turned off
3. Edit tracks - rename/delete
4. Select Artist/Album to favorites
5. Sound leveling
Same thing happened to me. Tesla said, that portion of the system found something wrong and had to reboot! If so, please display a message on the main display.