Let me explain:
When I connect the device I see the map CIRCUITPY appear on my computer. It contains the file main.py. When I try to read it, my text editor says: “The file …/CIRCUITPY/main.py can not be opened. Unexpected error: Error reading the file: input/output error.” When I open a picocom terminal, and use Ctrl-D to reload, I get the message:
main.py output:
OSError: [Errno 5] Input/output error.
I hope this helps?