I bought a cable and Techstream CD off Ebay. The only catch was something like I had to run Windows 7 or something. Newer OS wouldn't work.
I don't consider it stealing to disable an annoying reverse beep, especially when I had to pay for the stupid cable. The right to repair should encompass the right to make routine software changes. The fact that it takes anything special is silly. Should be able to make those changes with an iPhone or Android app for free. Or, better yet, just a menu option in the touchscreen display that already exists in 95% of vehicles.
The fact that OBDII codes aren't accessible on screen in the futuristic year of 2000 is criminal.
More predictions about how awesome things will be in the future; in the year 2000.