have you tried the example from the M5Unified library? It works for me on my M5Core2. (I don't have access to my M5Tough right now so I cannot check if that works as well.)
@ckcampbell248 Update...I think I solved my own problem. I believe the problem is with the Notepad app in the demo firmware. We tried several different SD cards that were known to be working in M5Launcher and they all failed on two Cardputers using the demo firmware. I installed Launcher on my device, and I am able to install .bin files from the SD card.