Just bought New IPhone 6S, which has IOS 9.2, and the version of ITunes I have on my MacBook Pro is 12.2.2.25 and I get the "IPhone requires newer version of ITunes" message as well. Went to ITunes.com, downloaded the version I already had installed (Just in case) restarted my computer, re-attached the phone and still got the same message.
Help.
OS X version 10.7.5 on my Mac.
only 2 options
1. upgrade your OS X to a version which support the required version of itunes
2. use virtualbox and install windows vista or 7 as a virtual machine and install the latests iTunes and sync that way
and of cause last get a new mac
because as it's stated here https://www.apple.com/iphone-6s/specs/
iTunes 12.3 or later
is a requirement of the phone
IPhone 6S requires newer version of ITunes
