Syncing iOS data on iTunes is the first thing that iOS users must do. To backup all iOS data just in case an accidental deletion happens or system failure that needs to revert iOS device its original factory setting. But sometimes, during the syncing process of iOS data from iTunes, an error occur - “The iPhone could not be restored. An unknown error occurred (14)”. If this happens, then you need to check this out; My Files Can't Be Retrieved - An iTunes Error 14 Occur