Device Updater Stuck in Updating

For the Device updater program to work, do I need to put the Photon/P1 into DFU mode 1st? I just tried the device updater using a Photon, and its been 10 minutes and still says “Updating to 0.5.1”.

Thoughts/ideas?

I’m pretty sure you need to put the device into DFU mode first.