Performing OTA DFU using COAP client/server from Open Thread Border Router instead of using NCP device

[Brian (Geek)]

Hello,

As we are close to production of our new device, i would like to know  what are the possible ways of performing OTA DFU in thread network from Thread Border Router. In SDK for Thread, OTA DFU is performed using NCP device but that wont be possible when our product is in market. I would like to have some possible solutions similar to firmware updates on mobile. We will be pushing the firmware  from AWS cloud  directly to thread end device OR from AWS cloud to Border Router and from there the packets are sent to end device.

I have read this threads:

https://devzone.nordicsemi.com/f/nordic-q-a/40971/how-to-perform-dfu-using-existing-californium-coap-server-instead-of-ncp/224512#224512

https://github.com/Zenatix-Tech/coap-dfu-server/tree/thread_dfu_server

which successfully does this by hosting a Californium COAP server on border router side. But i am totally blank of how to setup the same as i don't have any experience of that framework as well JAVA language.

Also Sir. RobC (in the first link) has adapted the same to be run on docker based open-thread border router image, and i want to do the same but on my border router which is using a Nordic Border Router Image with updated mqttsn gateways.

So if anyone can please guide me or tell me the steps of how to implement the DFU using Californium server setup on OTBR will be very much helpful. Or if there is any other easy way around instead please let me know that as well. 

Hoping for a quick response...

[Sigurd Hellesvik]

Hi Brian,

Our Thread Secure OTA DFU Example showcases how to configure and carry out the Over-the-Air DFU process in a Thread network.

OTA DFU is performed using NCP device but that wont be possible when our product is in market.

If you exaplein why this would not be possible, it would be easier for me to suggest an appropriate solution.

Regardsm
Sigurd Hellesvik

[Brian (Geek)]

Hello,

Sorry for late reply.

From my understanding, the NCP device (DFU server will first join in the network) than initiate DFU process. But in my case when i deploy end device on field (different location) and me sitting at my home won't be able to perform DFU as my NCP device won't be able to join end device network.

So for that reason i mentioned :

"OTA DFU is performed using NCP device but that wont be possible when our product is in market."

So can you please guide me what can be the possible way for OTA DFU .

[Brian (Geek)]

Hello can you help plz

[Sigurd Hellesvik]

Hi Brian

Do you have control of the Border Router the Thread Device will be connected to?

Regards,
Sigurd Hellesvik

[Brian (Geek)]

If have a MQTT connection established with OTBR for performing REBOOT and other small configuration that can be performed from web. Otherwise no other control.

Sigurd Hellesvik said:

Do you have control of the Border Router the Thread Device will be connected to?

Can you suggest me the possible solution for both YES and NO to above question.

Thanks