... Until I downloaded the Motorola Mobile USB drivers, reboot into fastboot by holding down power and volume down buttons, opened a command window in the folder C:\Users\[my user name]\AppData\Local\Android\Sdk\platform-tools and typed "fastboot -w" followed by "fastboot continue".
I can't find a TWRP recovery image for this model. Do I dare install https://en-us.support.motorola.com/app/softwarefix? No not worth the hidden ware. I have other rooted devices.