Are you able to setup a hotspot on your mobile or ipad and configure the Photon to connect to it? The LED sequence seem to suggest that it is unable to connect the 
successfully.
It might be a router configuration issue so the test above will verify it. But… You have photons previously connected to the same Wifi network?
If you have previously working Photons, can you power them on and see if they connect well?
Sorry, didn’t answer your question. I was trying to claim the devices to my account when this whole fiasco started. I do not see any of these new Photons listed when I do a “particle list”. I assume that means they were never successfully claimed. Right?
Also, I just logged out of my work account and into my home account and I’m getting the same thing (LED blinking pattern).
That’s right. 
They are not claimed under your account which is why submitting keys didn’t work for you.
No problem with the account, the issue is with the device not connecting to the and the account doesn’t get involved in any way.
Did you try powering up those Photon that used to connect to the Wifi network?
I’ve powered down/up two other other Photons on the same WiFi and they’re just as happy as can be. I also tried another WiFi network with the “problem” Photons, but without any success. Until these 3 Photons arrived, I’ve never had a problem claiming them on this network or any other network I’ve tried, even mobile hotspots.
So…with no other options in front of me, I tried using the Particle app one more time. It seems to choke in the step “Verifying device ownership”. Is there any way these devices could be associated with another account?
I tried configuring the Photon for the WiFi via the CLI and it seemed to accept the credentials. I then tried to add it to my account and got the following:
[Toms-MacBook-Pro:~/Documents/Particle/Key files] tom% particle serial identify
Your device id is 39002c001647353236343033
Your system firmware version is 0.4.9
[Toms-MacBook-Pro:~/Documents/Particle/Key files] tom% particle device add 39002c001647353236343033
Claiming device 39002c001647353236343033
Failed to claim device, server said: [object Object]
[Toms-MacBook-Pro:~/Documents/Particle/Key files] tom%for the devices that are exhibiting the LED flash sequence:
particle keys save PASTE_DEVICE_ID_HERE
.pub.pem) to @BDub offline so that he can provision those keys…keys doctor for those devicesThanks @kennethlimcp!
Also, I’ve asked some of the cloud team to take a look at the device ID in the system to see what’s causing the trouble.
@ctmorrison please hang tight waiting for further instruction on that device(s). Also, would you please send me all device ID’s of the ones that won’t connect? Thanks!
Thanks for the guidance. I’ll do this for each device and send all 6 files. At the risk of showing my newbieness, I don’t know how to get them to him “offline”.
Here are the 3 IDs:
39002c001647353236343033
1a002d001547353236343033
3a002a001547353236343033Still hoping for “further instruction”
A few people have been looking into this issue @ctmorrison already… hang in there we’ll get you an answer soon 
@ctmorrison ok, please try to connect your Photons to the Cloud again. You should not need to use keys doctor or or any other keys commands. Let us know if they all work
Another day…of frustration. Nope. All of them are continuing to exhibit the same problem.
For giggles, I removed another device from my account and then re-claimed it without issue.
Also, when I tried to claim one of the new devices via Particle Dev, the response was [object Object] – same as yesterday via the CLI.
Do I need to test to see if I can ping a particular server port? I’m aware of no changes here and, as I indicated yesterday, I also tried to claim one of the problem devices via a cellular modem with the same result.
Once again, it’s failing at “Verify device ownership”
Thoughts???
Since we have an email thread going now, I’ll update that one
I’ll let @BDub or whoever post any helpful/informative message. However, with his assistance my issues were finally resolved. Thanks Particle Gang!
I am having the same exact problem with 4 out of the 5 Photons I received yesterday. I haven’t tried the 5th photon yet. I’ve had 20 other Photons, this is the first I’ve seen this problem. What was the fix?
Can you tell us the version of firmware on some of these devices? That would help us verify if the cause is a known issue or not.
I suggest upgrading to 0.4.9 or later using particle-cli (but please find out the firmware version first before upgrading!)
After upgrading, put the device in DFU mode and clear the current key by flashing a 0 to location 34, like this:
echo -e "/x00" > zero
dfu-util -d 2b04:d006 -a 1 -s 34 -D zero
Note that you should only do this if the device has never successfully connected to the cloud.
Mine all arrived with 0.4.9. @BDub can explain the weirdness about my 3 thinking they were Cores instead of Photons and how that may play into the whole issue.
Yes. Mine are also all 0.4.9. Sounds like the same problem.