Maybe I spoke too soon. I can program the main HEX file, but it won’t run in the completed module. It doesn’t do anything. I tried loading on the Bootloader and then the main firmware, but after it’s done flashing it won’t reconnect to ST-Link. I get this error:
If I hold the reset button, click the erase button in ST-Link and then let go of the reset button, it will clear the flash and connect just fine.
So I am not sure if these boards are actually duds (I was able to load a USB bootloader on one without any issues and it worked. But I had the same connection issue.) or if I might be doing something wrong.
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