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The device manager shows two interface for 43907. One under libusbK for the FTDI chip and another for USB serial debug.
Kindly uninstall the drivers for WICED USB JTAG PORT and WICED USB SERIAL PORT by right clicking and selecting Uninstall driver. Connect the board again and check the binded drivers. In case the board is not bound to correct drivers, browse your PC for drivers and choose the below option:
Further you can run the DPInst from WICED-Studio-6.2\Drivers\Windows\uart.