Error: Probing the target board failed

In this case it should be working, especially since lsusb worked correctly.

You might want to set everything up for flash, verify lsusb again, and then monitor “dmesg --follow”. When the error occurs, does the dmesg log add anything new, especially USB errors?

As an experiment, when you get this error, see what happens if you unplug and then replug the micro-USB cable from the host. USB is hot plug, and possibly a simple unplug/replug will cause the flash software to recognize the device again (typically only a VM would care about this, but it has me curious if a regular host port is losing the connection).

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