aarg, Wow, that was quick. Board information below. In Boards Manager I have verified that I have installed 1.8.7 version of Arduino megaAVR. I have the Arduino Uno Wifi Rev2 board selected in the Arduino 1.8.16 version software. In Manage Libraries, I have verified that WiFiNINA_Generic 1.8.13 version is installed. I am connected via USB. On Com port 4. When I do the firmware updater in the software, I get an error message, "programmer not responding."
BN: Arduino Uno WiFi Rev2
VID: 03eb
PID: 2145
SN: 93646A41E52EF2D75B3B