I had been running version 1.7.8 SAMD Boards. Apparently when I updated the "Arduino SAMD Boards (32-bits ARM Cortex-MO+) to version 1.8.7 it modified the USB drivers and allowed my wayward WIO Terminal to work for a short time. Now I am still having the same USB driver issue loosing connection during an upload with only one of my WIO Terminals! It also got really hot. Does the WIO Battery expansion with extra ports, add-on, cause that?
Should I down grade SAMD Board to 1.7.7 and re-install to 1.7.8? Any other ideas?