I’ve an old spark core which I wasn’t using for a long time. Today I wanted to link it to my particle account with “Spark” Android app and saw that application couldn’t find the core. So then I followed these ([Spark core] Common issues) intructions:
particle flash --factory tinker
particle flash --usb cc3000 (will blink magenta and eventually revert to yellow)
particle flash --usb tinker
particle serial wifi
and successfully setup the wifi: “Done! Your device should now restart.”. The device is now breathing cyan but the spark app could not found it. What to do now?
Was it breathing cyan when you did the particle device add? You could also try doing it from https://build.particle.io. Click on the Devices icon (circle with the lines, the target icon).