Not with the car right now, but when you connect and you have your flash options. There is an icon in the top right. You click that and it allows you to select a file to custom flash. This where your downloaded back up for the TCU goes. Theres also the option to download it again. I'm not sure if the back up is an actual pull of the current installed map, or if the back up file is just a server downloaded map based on your Model and hardware etc from XHP. There has been an update to the app today not sure what it was addressing, so I'm going to try again tonight. And see if it will backup the GTS map and apply it back with the Final drive settings and no other options.