Posts made by COZMIKDX

You can find the firmware it came with and install it with the m5burner program. Download Page

Go to the UIFLOW FIRMWARE BURNING TOOL section and download the version for your computer.
When you open it, go to the stamps3 section and look for the User Demo firmware.
I recommend trying out the User Demo Plus firmware that someone uploaded.

Could be a bad USB-C cable. I had to switch mine out for the same reason.
Or maybe your cable isn't pushed into the Cardputer or PC all the way.
Make sure you're holding the G0 button and the power switch is off when you plug it in.
Mine gave me no indication that it was ready to write to or turned on when I was in the same situation.