Hi John,
The device was working fine prior to the firmware update.. I followed your advice step by step, and nothing changed. So, I keep thinking I must be doing something wrong - maybe I'm not shorting it correctly? I checked the USB cable, it is Ok - powering other MC devices without a problem.. Changing USB ports at the PC also didn't do anything.
This was the first time we opened any of the MC devices, the 7-digit serial number is: 18EB972.