Thanks for helping ScruffR !
Using this page as a guide: https://docs.particle.io/tutorials/device-os/led/core/
From my “breathing Cyan” ie “connected to cloud via my WPA2 Wifi” state, I do the procedure to get into safe mode:
- Hold down BOTH buttons
- Release only the RST button, while holding down the MODE button.
- Wait for the LED to start blinking magenta
- Release the MODE button
(actually this looks like a factory reset to me cmp https://www.youtube.com/watch?v=nGBSYyTo5xA except MODE is held longer.)
However, I never get a blinking magenta at step 3:
It seems to cycle infinitely between:
- blinking green (connecting to Wifi ?)
- fast blinking cyan (connecting to cloud ?)
- slow blinking cyan once (?)
- fast blinking cyan (?)
- going dark (?)
After my finger on the MODE button eventually tires out, I let go and the core ends up in
blinking blue (listening mode), from where I can provide the usual Wifi credentials from scratch. After which it happily connects to the cloud again (breathing cyan). Ie back to square one.
I never get the Safe Mode blinking magenta…
Core remains (on trying to flash a sketch from WebIDE: Raw mode output = Device not discoverable or is offline) while Console clearly & reliably notices it going online. Likewise “Signaling” still does nothing as before.
PS I also tried the alternative method of getting into Safe mode: hold down MODE button while booting the Core. It results in exactly the same behavior as above.