I just bought a spark core, I followed all the steps and I was able to configure the WiFi and also to register the core. The app did not work, I had to do it with the serial terminal but no problem.
The problem arises after, I got the cyan led blinking. I tried with two routers: D-Link and Apple Time Machine, even considering a channel below 11. I tried with both, switching off the other and I got the cyan led blinking. I am not sure if it is the death problem because it start blinking, it connects, after 10 sec starts blinking, then after 5-10min fixed, and then blink again.
I am not able to use it both with the spark app and programming the core.
Should I upgrade the CC firmware? Anyone with the same problem?