I bought the same unit and am in the process of getting it to work in my 2007... trying to find a microphone and the usb plug that goes into the back of the nav.. i have the USB/AUX port, but have to figure out how to get it connected to the deck.
BTW, ive researched the Entune.. i dont think we can get it to work. You need a vin from a 2012 with entune in order to register on the website..
Master ASE/Lexus Master Certified Diagnostic Specialist/Smog Tech.
2011 Lexus IS350 USB FSport Edition
2007 Toyota Tundra SR5 TRD 4x4
2010 Toyota Sienna Limited