Lock Down 410c "Boot Menu"


Hey Folks,

I am currently trying to secure my qualcomm dragonboard 410c with Windows IOT Core. When i boot the Device i get into the startmenu of the board by pressing +,- & Power. (Not the Windows one but it seems from the board itself. Does anyone know how to disable or lock this with a password?

According to Microsoft i need a closed firmware on my board, but I haven’t found anything on the support pages