Before setting up syncing you should download and install the latest version of iTunes. Wi-Fi syncing requires iTunes 10.5 or later and iOS 5 or later. You can change your sync options at any time. Each time you sync, content is synced between your iOS device and computer to reflect new, updated, or deleted content.
If the iOS device does not appear in the Devices section or you are unable to sync, please see this article for troubleshooting.
The first time you sync the Info tab with your iOS device, you are asked if you want to merge data, replace data on the service, or replace the data on your computer from the following applications:
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