Continuous flashing red

What does continuous flashing red indicates?
Have reflashed the cc3000 module and update the firmware.
Also changed the flash memory as it appeared broken before.

Is there away to “factory reset” the core without Jtag?
And with factory reset I mean reflash everything from usb.

Hi @mippen,

Continuous flashing orange can indicate a key problem, but there shouldn’t be a continuous solid red. You can reflash most things via USB, just skip the bootloader / jtag / locking parts on my walkthrough here:


Have tried to recreate the private key and inserted the public … without any change in behavior…
This is how the core looks like:

Hi @mippen,

Have we recently inserted a new public key for your core?

Yes… did it as well as recreated one.

Hi @mippen,

Oh, my mistake, this video was meant to demonstrate how the core will look, sorry!


my video shows the current status on my core.
can not find any information on what only red flashing means.

Hi @mippen,

See my post above, continuous flashing red / orange like this indicates the keys on your core need to be updated. Can you follow the steps from that thread: and then email us your public key at ?


Alright… Need to figure out how the programmer shield connects…

Hi @mippen,

You can flash keys and firmware using dfu-util over USB, no programmer shield necessary! :smile:


Thanks… figured that out and have sent an email with core id + key to

1 Like

Hey @mippen , got your email and added the key, thanks! Let us know if this fixes the problem.

Thanks @jgoggins … But sadly no…
After setting the local network info the core goes to orange, and after a while back to blue flashing (no breathing).
Can not see the rainbow flashing when it waits for the name setup.

Guess I have to figure out how to jtag the device.

Hey @mippen , I’m wondering if perhaps you didn’t run this command:

dfu-util -d 1d50:607f -a 1 -s 0x00002000 -v -D core_private.der

to upload the corresponding private key matching the core_public.pem you sent me?
The logs look like this is the case.

Is the result as it should be on dfu-util -d 1d50:607f -a 1 -s 0x00002000 -v -D core_private.der ?

Copyright 2005-2008 Weston Schmidt, Harald Welte and OpenMoko Inc.
Copyright 2010-2012 Tormod Volden and Stefan Schmidt
This program is Free Software and has ABSOLUTELY NO WARRANTY
Please report bugs to

Filter on vendor = 0x1d50 product = 0x607f
Opening DFU capable USB device… ID 1d50:607f
Run-time device DFU version 011a
Found DFU: [1d50:607f] devnum=0, cfg=1, intf=0, alt=1, name="@SPI Flash : SST25x
Claiming USB DFU Interface…
Setting Alternate Setting #1
Determining device status: state = dfuERROR, status = 10
dfuERROR, clearing status
Determining device status: state = dfuIDLE, status = 0
dfuIDLE, continuing
DFU mode device DFU version 011a
Device returned transfer size 1024
No valid DFU suffix signature
Warning: File has no DFU suffix
DfuSe interface name: "SPI Flash : SST25x"
Memory segment at 0x00000000 512 x 4096 = 2097152 (rew)
Downloading to address = 0x00002000, size = 610
Poll timeout 50 ms
Download from image offset 00000000 to memory 00002000-00002261, size 610
Poll timeout 30 ms
File downloaded successfully

Managed to get it to talk to the cloud, breathing…
It also answers on Tinker app.
But when downloading a test application it goes back to the old orange problem.

Hi @mippen,

Is your test application doing anything like writing to the external flash? Is it fast flashing orange after doing an over-the-air update, or is it slowly blinking yellow?


Using the demo LED application.
The LED procedure when over-the-air update is:

Hi @mippen,

Ah darn. Thank you for posting that video! That video indicates that the external flash on your core has a bad region where the over-the-air firmware update is stored. Your core runs and downloads code, but resets into dfu mode after copying the new firmware indicating that it is faulty. Can you email us at and we can exchange that core for a working one?


This core should be under the exchange program already.
But it hearts not to get it running.

I have replaced the flash on this core.
Is there any special treatment that is needed after replacing flash?