Hi, I’ve a 2014 A7 BiTdi. I changed the rear pads last year without any software. I just unscrewed the motors which power the electronic brake and rewound them by hand using a star head. I can’t recall exactly but it was very easy and only took about 3 minutes for each motor all in. Actually easier than rewinding a normal “old school” rear handbrake.
I did the front pads today but the brake pad warning light won’t go out. Nuts!