HP Prime G2 stuck in "Update Mode"

[BarryGKnapp]

I am trying to apply the latest firmware update to my new G2--Hardware version D, Software version 2.0.0.13865 (2018-08-02). My Connectivity Kit is "Build 2.1.14181 (2018-10-16), and the firmware update I am trying to apply is "HP_Prime_Calculator_G2_Firmware_20200116.zip", which I obtained from the HP ftp site. The zip file is correctly installed in the Documents/HP Connectivity Kit/Firmware folder. I reset the calculator to the Update Mode with the reset button on the back and holding down the "Symb" key on the front. But the Connectivity Kit does not see the calculator when I plug it it. My computer does give me the alert that it recognized the device, and that it was "all set up and ready to use", but the CK does not see it. I am unable to turn the calculator off. It is stuck in Update Mode. Any help would be greatly appreciated!