Currently Being ModeratedNov 1, 2013 7:17 AM (in response to jwenders)
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If music isn't syncing to your iPhone after updating, you may want to try setting up syncing in iTunes again by following the steps in the article below. If you're syncing music, try un-checking and then re-checking the "Sync music" checkbox in iTunes.
iTunes 11 for Windows: Set up syncing for iPod, iPhone, or iPad
If music still doesn't sync, try the troubleshooting steps in our iPhone assistant:
Frozen or unresponsive iPhone