Dear Wim,
If you already registered your BMS kit and you have NDA, the software installation guide should be available as secure file at HVBMS Bubdle Doccumentation webpage.

The latest BMU firmware using FreeMASTER TSA feature, which doesn’t require .elf file to communicate with GUI. We are working on quick start guide update.
However if you have older kit I recommend you to upgrade firmware to latest. If you registered your kit, you can find latest FW in your software account (Software Licensing and Support -> Software accounts -> Automotive SW - HV-BMS Reference Kit Software -> HVBMS - RD Bring-Up Example)

Best Regards
Ivan