I currently have 2 unusable Photons. They display the same symptoms.
- I plug the USB in (direct from my iMac); initial white light
- blinks green for a second then changes to breathing cyan
- after 10-12 seconds changes to slow blinking green
- after another 10-12 seconds it changes back to breathing cyan
The whole cycle — start of cyan/end of green is about 25 seconds over and over.
I may have caused this problem. I was moving programming from my iMac to a Mac laptop. Without noticing I think I had Particle Dev accessing the same Photon (screen had gone to sleep on the laptop). Only a guess.
Unlike the Core there’s no factory reset. If I hold the reset down to the blue blink I can use Coolterm to redo the wifi like so:
Security 0=unsecured, 1=WEP, 2=WPA, 3=WPA2: 3
Thanks! Wait while I save those credentials…
Awesome. Now we’ll connect!
If you see a pulsing cyan light, your device
has connected to the Cloud and is ready to go!
If your LED flashes red or you encounter any other problems,
visit https://www.particle.io/support to debug.
Particle <3 you!
The “t:1913” is from Serial.println() in the program that is still running on the Photon.
I tried the steps under your support ref. Especially the bit about resetting the public key but without success. I couldn’t install dfu-util — endless missing stuff.