Photon being bricked during OTA update from 1.2.1 to 1.4.4

We have a fleet of around 2000 devices, and as we rolled out the update to 1.4.4, we’ve had around 10 customers report that their device became bricked during the OTA update. I’ve been able to replicate this on a Photon and the symptoms are no color on the LED and completely unresponsiveness. The Photon does not respond to any input from the buttons or through serial.

Has anybody else experienced this?

@jking, I assume that you could not even put them into Safe Mode?

If they are in the field, then I customers may find it difficult to follow the instructions to get them into Safe Mode.

How did you replicate this issue?