I've been using Photons for quite a while now. I bought a bunch of Photon2s and have had nothing but issues. First one is dead - probably my fault. The next two exhibited unusual behavior. I pulled one from its device to bench test it. It randomly goes to a solid cyan led and loses all connectivity and does not execute code. I flashed tinker and it still does the same thing. Just randomly goes to a solid cyan. I pulled a new Photon2 from the box and set it up. It setup fine and connected. Overnight it went into a solid green led and lost all connectivity. What the heck is going on? I tried the keys doctor on the solid cyan, but it still does the same thing.
This could be related to this issue which is still being investigated. It seems to be related to specific access points that cause this issue.