P1 quick cyan and red flash error


I am getting a burst of quick cyan flashes followed by one or two quick red flashes on my P1 and it will not connect to the WiFi. I have previously had this P1 connected to the cloud and working so I am wondering what has happened?

I have not changed any code since it was last working.

I only have JTAG and WiFi available, not USB.


Have you searched the forum for red burst?

That’s usually in connection with corrupted keys and cured with

particle keys doctor <yourDeviceID>
particle keys server

Sorry, missed the missing USB bit.
That’s something for the hardware guys (@BDub?)

@particlefan2015 if you haven’t run ScruffR’s commands yet, would you please backup your P1 image first and send it to me at You just need to put the device in DFU mode and run this command (note the replace with device id part of the filename):

dfu-util -d 2b04:d008 -a 0 -s 0x8000000:0x100000 -U p1_backup_replace_with_device_id.bin

In your email, please link to this thread so I have a history of things :smile:


Ahh, I missed that part. Well if you have JTAG… you can connect, and read the image out starting at address 0x8000000 with length/size 0x100000 and save as p1_backup_replace_with_device_id.bin then please email to me. If you have a server key issue… I’ll test a JTAG way of restoring it.

I have managed to get the code out as hex, I am not sure if I can get the binary. Is this okay? Also, what is your email address?


I’ll PM you his address