Q: I recently updated my Iphone 5 to the latest software.  Now when I connect to my car audio with the hotwire USB it will not display or play my music.  It worked fine before the update.  Is there a setting I don't know about with the new software?

I have a similar problem.  Prior to the 7.0.3 update my iPod touch worked properly and I could see the music folders, playlists and music lists.  However, after the update it no longer works - I cannot see the playlists, the names are blank.

I do not believe your response properly answers the issue at hand.  If the iPod worked properly before the update then it should work properly afterward. With the response and link above it appears it is Apple's stance that it is the radio manufacturer to make the radio work with every update.  That is backwards and, in my opinion, irresponsible.

It should be Apples responsibility to make sure that the functionality of the device is the same both before and after an update.  If they cannot do that then they should make it easy for the user to downgrade or uninstall the update to regain the previous functionality, at least until Apple can resolve the issue their update created.

Rob.

I agree with Robloid.  iOS7 hosed my USB connection into my car AND the bluetooth iPod connection.  Voice bluetooth for calls works fine.  IOS7 also hosed my synch for music as I have playlists not synching even though they're all checked to synch.  This may be one of the worst OS upgrades in history.  Even iMessage is still glitchy even though the latest patch improved it.

Mine worked last Saturday but now does not work with IOs 7.04. With each update, the phone becomes less operative. I'm going to return it if Apple cannot resolve the many issues resulting from IOS 7+.

From another thread, I did Settings -> General -> Reset -> Reset All Settings

It works again, for now.