Not able to Flash BME688 development board

I downloaded BME688_Development_Kit _Software _v2.0.9 and tried to flash my 688 board (attached to Adafruit Huzzah32 board) and get the following error: "'esptool.exe' is not recognized as an internal or external command, operable program or batch file."   I tried naming a different port, re-downloading but get the same error message.    Board uploads and runs the Arduino libraries but those are different that the flashed programs as there is nothing saved as a "BMErawdata" file format, BSEC2 libraries only put a *.csv file on the sd card.Any suggestions?  Using Windows 10 latest update and latest Arduino software.

Thank You

Best reply by BSTRobin

Hi Buz-lactarius,

You should enter "COM14" instead of "14".

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