I've tried several times, including after restarting computer and powering everything off and trying again. No luck. I'm about 0/10 at this point. The USB light on the Blackbox flickers red each attempt, so at least there is some talking, but the flash fails within a few seconds each time. EDIT/UPDATE: I noticed it took differing amounts of time to fail, so I just kept hitting the button. After about 40 tries it updated. Everything works, and the emergency stop functions as desired. Thanks.