Syncing iOS 8.3 with iTunes 10.6.3
I am running iTunes 10.6.3 because I hate how they got rid of the three panes for selecting music.
As such I am faced with the conundrum of needing to upgrade iTunes because I recently got an iPhone 5s. It is running iOS 8.3 so iTunes doesn't even recognize the device. When I connected it to the computer for the first time it said an unknown error has occurred and can't mount the device.
MacBook Pro 13" OS X v10.10.3
iPhone 5s, iOS 8.3, 32GB