As i wrote i had the same problem. As i now tryed to start the program as administrator it worked flawless. So try that

I updated the esc with stock1. The programbox with 2.7. At the track i had the problem my esc didnt do anything anymore. So make sure u test it. The esc didnt want to start up anymore. After putting the 2.4firmware into the programbox it worked fine again. All setting also the hybribboost work great.

This esc is a monster !