If you’re getting cannot verify ownership, the cause varies depending on the final light sequence.
The normal sequence on the status LED is: white, blinking green, blinking cyan (light blue), fast blinking cyan, and finally breathing cyan.
If you get to breathing cyan
Put the Photon into Listening mode (blinking blue) by holding down SETUP until it blinks blue if it is not already blinking blue. Then issue the CLI command:
particle serial identify
Save the Device ID; you’ll need it later.
Reset the Photon. Once it gets to breathing cyan again, enter the command:
particle device add YOUR_DEVICE_ID
If you get to fast blinking cyan, then get red or orange blinks
Put the Photon into Listening mode (blinking blue) by holding down SETUP until it blinks blue. Then issue the CLI command:
particle identify
Save the Device ID; you’ll need it later.
Then put the Photon in DFU mode by holding down both the RESET and SETUP buttons, releasing RESET and continuing to hold down SETUP until it blinks yellow and issue the commands below, in order.
particle keys server
particle keys doctor YOUR_DEVICE_ID
Reset the Photon. The main status LED should proceed through white, blinking green, blinking cyan (light blue), fast blinking cyan, to breathing cyan. If it does not get all of the way through, include that information in your reply along with copying and pasting the command prompt output.
Only if you get all the way to breathing cyan:
particle device add YOUR_DEVICE_ID
If you only get to blinking green
Put the Photon into Listening mode (blinking blue) by holding down SETUP until it blinks blue if it is not already blinking blue. Then issue the CLI command:
particle identify
Save the Device ID; you’ll need it later.
Now enter the command:
particle serial wifi
This will allow you to configure your Wi-Fi network.
If your network uses WEP Authentication you should follow the instructions on the linked page.
Reset the Photon. The main status LED should proceed through white, blinking green, blinking cyan (light blue), fast blinking cyan, to breathing cyan. If it does not get all of the way through, include that information in your reply along with copying and pasting the command prompt output.
If you’re still stuck at blinking green there are more tips here: https://github.com/rickkas7/particle_notes/tree/master/blinking-green.
Only if you get all the way to breathing cyan:
particle device add YOUR_DEVICE_ID