I’m sorry I come back I have a Photon I try to setup with smartphone at end of setup I receive following message : Setup completed Your device has been successfully claimed to your account, however it is offline.
What I can do to solve this? Thanks Valentino
The Photon can only connect to a 2.4GHz WiFi.
I have two channel 2.4 Ghz and 5Ghz I tray both but without result same error on 2.4GHz
What is the status led doing? Describe any and all colors/patterns. Any orange perhaps?
cyan like it is connect
If you’ve got the CLI installed, you can try a ‘particle update’ while in DFU mode, ‘particle identify’ in listening mode for the device ID, and ‘particle device add [ID]’ while breathing cyan to add the device to your account.
Good Afternoon Moors7 two problems now:
1)I have difficulty to install the new version of particle-cli my system answer (see print screen) I’m using windows 10 Italian lang.
- if I’m check the USB port after setup with the smartphone the usb say dispo serial usb (com8) but not spark …
This is not Windows 10S, is it?
Windows 10 PRO
I’m going to assume not everybody speaks Italian here… Mind translating for us what that error message says?
It says: “Impossible to execute this app on your PC, to find a version for your PC, contact the distributor of the software”.
So not too much to go by 
@Tino52, is this Win10Pro 32bit or 64bit? I’m running 64bit and never saw such message with CLI.
Have you tried this Windows CLI Installer?
https://binaries.particle.io/cli/installer/windows/ParticleCLISetup.exe
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Sorry! :Not possible to run this app please contact the distributor or seller
Good Morning now I have install ParticleCli. I’m deactivate the windows defender for apps (all 3 possibility) now I can restart to tray setting up my Photon
first time I see in Control Panel - 
now I tray to update. Thanks a lot and I wish happy day
Hi Mr.Scruffr now after a longtime my Photon is alive! After a particle flash --usb tinker.
Thanks a lot for your Help and from other community people.I can flashing my code in WEB Ide!
What means by update :Invalid DFU suffix signature A valid DFU suffix will be required in a future dfu-util release!!!
Best regards Valentino
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This is an ignorable warning.
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Grazie!
I have exactly the same problem when I try connecting to a different network but my photon is blinking cyan with a burst of orange every now and then, what can I do to solve this?