I currently own a registered KII-USB, a 2003 A6 2.7TT, and just picked up a 2012 A6 3.0T. Will the KII-USB be able to do anything to the C7? Or do I need the new HEX-V2 or HEX-NET devices? Will either/both of these devices then also be able to work on both vehicles? Thanks in advance.