I have a a Particle Electron that has been running nearly 24/7 for several months suddenly unable to connect as of April 14th. When I check the status LED, I see the following sequence…
- White: breathing (a couple seconds)
- Green flashing (around 15 seconds)
- Cyan (less than a second)
- 3 Orange flashes
- Cyan flashing
The tutorial for this devices says the meaning of 3 orange blinks is: “Connected to the internet, but could not reach the Particle Device Cloud. This sometimes is seen as yellow or red and indicates bad server keys.”
Also, for some background: I am using the official SIM card. This system was using firmware version 0.5.4, and I have a second. identical system using version 0.7.0 that is able to connect.
I’m about to follow the repair instructions per: https://docs.particle.io/tutorials/device-os/led/electron/#red-blink-basic-errors. This requires removing my Electron module from the assembly to establish the command line interface (CLI). However based on a similar topic from February, I don’t expect it to work.
I really will need to know if this bad server key problem is avoidable or what a likely root cause is. The system worked just fine for many months and suddenly stopped connecting without warning.