nRF52840 secure dfu over thread issue (not working)

[kpyush]

SDK: nRF5 SDK for Thread and Zigbee v1.0.0

nrfutil version : 3.5.1 (also tried with 3.5.0)

pyspinel: 1.0.0a1

board: nrf52840 PDK

gcc version: 5.4.0 20160609

instruction has been followed as per the document in this link

we are using following command: nrfutil settings generate --family NRF52840 --application client\pca10056\blank\armgcc\_build\nrf52840_xxaa.hex --application-version 1 --bootloader-version 1 --bl-settings-version 1 settings.hex 

issue: 

1. We not able to run Secure dfu example over thread
2. DFU in multicast mode, DFU server doesn't complete the DFU process . it get stuck on last 2 byte data (command used: nrfutil dfu thread -f -pkg app_dfu_package.zip -p COM3 --channel 11 --panid 43981 -r 4 -rs 5000 -a FF03::1)
3. DFU Server in multicast mode always sends the data even if no DFU client is available
4. DFU client throws the DFU_DOWNLOAD_TRIGGER event = DFU_EVENT_TRANSFER_ERROR (RTT log)
5. The error mentioned above throws even if there is no DFU server available. After three retries it throws no more retries message and stops

[Susheel Nuguru]

Hi Peeyush,

At this point it is not clear if the problem is in the nrfutil or in the SDK. 

Seems like you are running windows and we do not see big issues like this with nrfutil on Windows.

I will try to follow that guide and see if it fails the same way as you on my desk and then try to debug it from there on Monday. (hopefully that is OK) 

Meanwhile i strongly recommend you to upgrade your nrf tools to latest and greatest.

[kpyush]

I had tried on linux first..then moved to PC.. I agree with you..if you can share your tools version then it should be useful to us. How ever I have noticed one thing the client is not being able to print the IP addresses properly.

Let me know if you are using DK or PDK for testing this setup.

Thanks 

[Susheel Nuguru]

Peeyush,

I am using DK and do not have any PDKs with me.

I am strongly suspecting this has to do something with nrfutil which is the tool you used to generate the hex file. Something might have gone wrong there with signing the HEX file.

Please try it out with the latest nrfutil and nrfjprog versions.

[kpyush]

please try with new SDK2.0 and nrfutil4.0.0.. these have been released yesterday itself. I am facing the same issue you can try on DK and let me know I have 4 of these.

[Susheel Nuguru]

Please try not open duplicate case in private and public forum. Closing this one and you can continue on your opened private case with Vidar Berg

[kpyush]

Please reply on the private case, I have created.