I think I'm making some headway...
Here's what I've done so far:
1. Connect iPhone up to PC,.. go to iTunes, search for ITSX, then download this free app, install/sync it to your iPhone.
2.Follow Teds directions for reading your stock tune info from your car.
3. Go to
www.sctflash.com, Click on "tech support", then scroll left/right until you locate.. SCT X3 Power Flash -GM (even though you have the iTSX) Click on this.
4. the next page asks for you to enter your serial number that can be found on your iTSX module. Enter Serial Number and Click Submit.
5. Next page,.... scroll down until you find the latest version fo the software .... ie,..
SCT X3 Power Flash General Motors Programmer Device Update Software
Version: 2.9.7.82 Release Date: 08-02-2012
Download and run.
6. Now, connect the micro usb cable up to you iTSX module , and then to your PC. Select "load driver software sutomatically"
7. On your desktop should be an icon "SCT Device Updater" ... double-click and run... then follow Teds directions...
this may not be perfect yet,.. but at least I'm able to get my stock tune transferred to my PC, then emailed to Ted!!
hope this helps!
Allen