1. I presume somewhere around job 2 of 2012 foci.
2. Few cars have issues with V3.0.2 with Nav and the rear view camera. Current issues are with climate control and audio screens, etc. Personally, I like my phone's Nav better, but the rear view camera is Jawesome.
3. Sync is separate. No issues there.
I'm currently at a weird spot with the ownership of my car and so I chose not to recommend in-favor or opposed to you buying a Focus.
2012 FF Ti HB Kona Blue, Built 5/24/2011, 401A + Ti Handling Package, Parking Technology Package, Winter Package, Moonroof, and MFT w/NAV at v3.6 66k miles and counting...