I know this is much later, but I am having the same problem. I appreciate the link, and I was able to download the Configurator, but I am getting an application error at the end which says "Reason: Corrupt installation. Please reinstall Surface UEFI Configurator".
Earlier in the process, it also wouldn't let me select any of the "Pro" series as the device I want to target. When I tried to select it, it immediately deselects it, but would at least let me continue from there. Maybe that is part of the issue?