I have a particle photon. I played around with it using Zerynth, now I wanted to revert it back to Particle software. I placed the device into DFU mode, followed the instructions in https://docs.particle.io/support/troubleshooting/firmware-upgrades/photon/ and I was using part1 and part2 0.6.4 release binaries for photon device. The flashing finishes successfully as show in command line. However the MCU is not restarting and not running the Particle software. Am I missing something? Any help is appreciated.