Pumpkinsnuffle

i have 1.2 on as edit: also its 9.4.0-21

so, i am not sure what to do. i am following all of the steps as they are listed, but when i go to check my pc boxes after running the exploit all it does is show a black screen. ive tried clearing my cache/cookies. im running 9.4 on my 3ds. im not receiving either a red or green screen after running it, not sure if that means anything. any help would be appreciated!