Unable to flash CircuitPython onto MDK Dongle

I have attempted to install the CircuitPython firmware onto my device without success. My MDK came with the UF2 bootloader already installed, so I did have to convert the HEX. However my device simple reboots without showing the CP drive or any other indication that it was flashed successfully. I did test my device with the Blinky example successfully, so I know that my device is functional.