I'm pretty sure the 2013 gets updated via USB. If there is a chip, it is not easily accessible.
I asked about the update at the dealership and they wanted to charge a minimum of .5 hours labor to install the update. I was looking around for instructions on how to do it and could not find any but I'm pretty sure it involves the USB port.
Later models have it on an sd card that is easily removable and replaceable.