I was playing around with HANS and I launched the system settings through it. Because the system settings allows you to close it without pressing the home button i pressed exit. After this my 3ds went pure black screen. Following this, I pressed l/r/down/b and my 3ds took me back to the home menu (not homebrew, system home menu) and stated the following message An error has occurred. Please save your data in any software currently in use, and then restart the system. I am no coder so i couldnt do anything with this but maybe someone can.