Particle Core no longer connecting

Hey so i have some original particle cores that use to work like a dream. I last plugged the one in in july and all was good.

I tried to revived it today and it just flashes slow cyan and wont connect. I cannot get it to change to the flashing blue light.

I can get it in to dfu mode and run particle upgrade and it says there is no updates available for it.

Ive tried doing a hard reset and that doesnt change anything different.

Any ideas on how to revive it?

particle serial wifi tested?
Could you 3 sec press Mode: should bring blue blinking up.

Hi @Devin

I would try refreshing the TI CC3000 WiFi part’s firmware which you can do in DFU mode:

particle flash --usb  cc3000
particle flash --usb tinker

Doc is here:

1 Like

thanks but. It wont blink blue no matter how much I hold the mode button.

Thanks bko, i was looking for these commands. never seems to remember them.

I can run both those successfully but still it wont allow me to change the mode other than dfu.

Seems it might of packed up. was an original kickstarter one

Hi @Devin

I have had one Core pack it in (as they say), but it flashed white on reset indicating that the ARM could not talk to the CC3000. I believe the CC3000 was beyond repair on that device.

Thanks. i think this core has met the same fate.

Ive just gone through the same steps with some of my other cores and they working fine.

I had a core that was embedded in a project fail in the exact same fashion: breathing cyan forever, can’t put it in blue flashing mode. Last time it was online was Nov 14th 2017. I’ve been trying to revive it for hours, but I think it may be hopeless.

You can try these steps:

The first step will be to install the Particle CLI if you have not already done so.

Then put the Core in DFU mode by holding down both the RST and MODE buttons, releasing RST and continuing to hold down MODE until it blinks yellow and issue the commands below, in order.

After completing some of the steps the color may change to something else; if so note what color/pattern it is, then use the button combination to get back to blinking yellow. The core should be blinking yellow before each of the commands listed below is entered.

particle flash --usb --factory tinker
particle flash --usb deep_update_2014_06
particle flash --usb tinker
particle flash --usb cc3000
particle flash --usb tinker

Additional instructions are here:

Then put the Core in listening mode (blinking blue) if not already in that state by pressing and releasing RST. Then holding down MODE until it blinks dark blue. Then issue the command:

particle serial wifi

The normal sequence is white, blinking green, blinking cyan (light blue), fast blinking cyan, and finally breathing cyan. If you do not get to breathing cyan, please copy and paste the terminal output in your reply and let me know how far it did get.

If that doesn’t solve the problem, you should create a support ticket.