I just received my photon few days ago. Somehow it flashes this red SOS signal. I tried to do factory reset. However, I cannot do it. It never flashes the yellow LED. Instead it flashes the red LED again after pressing the mode button for a while. In the video, i just restart my photon. Initially it flashes the red SOS signal. After a while, the red SOS signal goes, and it only flashes the blue LED. Can someone help me please?
No factory reset
AVOID factory reset - What to do with unexpected LED behavior on a Photon
There are some threads about cyan blink with red burst (usually a key problem)
e.g.
[SOLVED]Photon fast blinking cyan (with a random red burst)
Photon setup flashing cyan with a "quick red burst" (now orange burst) [Solved]
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I have the same problem, and havent fixed till now. But my device is core