Following the tutorial, you'll end up at task 3 "Download the Firmware Uploader".

After downloading and installing it, one will be prompted by a request to give the application permission to be launched - so far nothing out of the ordinary. AFTER one does this, the application should be good to go.

Yet, AFTER giving it all the permissions it could ask for and Apple could take from it, it still does not launch. The application's icon will briefly pop up, go away, and pop up one last time, more or less quickly prompted by a crash report, saying that the application quit unexpectedly. I am currently running macOS Sonoma 14.1.2.