Bricked nRf9160-DK

RE: Bricked nRf9160-DK

Bjørn Kvaale — Wed, 13 Feb 2019 12:47:05 GMT

The solutions may vary. There is this case here, but I do not think the answer has been found yet. The reason I ask you to create a new case is because your case is different to the first question. It does not make it very easy for other developers looking for solutions if there are different questions & answers on each case. Ideally, each case should have one question & one answer. I hope you understand.

One tip: have you tried erasing & programming via nrfjprog? Try to download the latest version & get that working.

RE: Bricked nRf9160-DK

RicFlair — Wed, 13 Feb 2019 03:58:55 GMT

Hi Brian, I am Having similar issues as well. Is there a new case opened in regards to a solution?

Thanks

RE: Bricked nRf9160-DK

Bjørn Kvaale — Mon, 11 Feb 2019 08:09:31 GMT

Hi SC,

Could you please post this comment as a new case in devzone please?

RE: Bricked nRf9160-DK

Suttichai — Sat, 09 Feb 2019 10:48:24 GMT

Hi,

Any one can advise? Why I cannot program my nrf9160DK use SEGGER Embedded Studio (SES) .

I can Erase and Program the DK use nRF Connect but the kit will not running.

I can program "Secure boot.hex" and can run DFU for modem firmware.

I use latest SES V4.14 (Nordic edition)

This is what I tried to recover my nrf9160DK. (after erase all and program Secure_boot)

1. Open NRF Connect SDK Project >> asset_tracker

2. Rebuild solution >> Done

3. Target >> Connect J-Link >> Connected

4. Target >>Download zephyr/zephyr.elf >> Got ERROR Reported "FAILED TO WRITE MEMORY"

Please help, I still cannot recover my nrf9160DK. And I cannot develop my own application because I cannot program target from SES.

Thanks,

RE: Bricked nRf9160-DK

Bjørn Kvaale — Fri, 08 Feb 2019 14:47:14 GMT

First off, you should erase the nRF9160, then program the secure_boot hex & then the asset_tracker application. Do the modem DFU either afterwards or before this, not in between the secure boot & asset tracker programming. In addition, I am not sure you can use the programmer app. I would program the nRF9160 via Segger Embedded Studio.

RE: Bricked nRf9160-DK

Suttichai — Fri, 08 Feb 2019 11:42:41 GMT

Hi Bjorn,

I follow your suggestions but cannot recover my nRF9160DK.

via nrfConnect Programmer I do as follows,

1. Erase the nRF9160 >>done

2. Program secure_boot.hex >>done

3. Run >>nrf9160_mdm_dfu --update >>done (NB-IoT modem firmware)

4. try to program "asset_tracker"

Left hand side is "secure_boot" and right hand is "asset_tracker", seems hex files overlapping and if I tried program "asset_tracker", nRF9160DK still not working.

What I did wrong? any suggestions?

Thanks,

RE: Bricked nRf9160-DK

Bjørn Kvaale — Tue, 22 Jan 2019 13:10:45 GMT

I agree. Erase the nRF91 via nrfjprog --eraseall -f nrf91 or via the nRF Connect Programmer app first. This will only erase application flash, not the modem flash. Then, program the secure_boot.hex file first & then the application hex file (e.g. asset tracker or lte_gateway, at_client, etc). You can program the hex files directly via Segger Embedded Studio.

RE: Bricked nRf9160-DK

MJD093 — Tue, 22 Jan 2019 10:14:31 GMT

Some DKs were shipped with the at_client and others with the asset_tracker app. Using the secure_boot.hex and asset_tracker.hex in the 'Programmer' nRF Connect app should be all you need.

I did have to get a UICR fix from Nordic for my original DK, that was the final thing I needed in order to use the nRF Programmer. However, you should be able to flash sample programs using SEGGER Embedded Studio as per 'nRF91 Getting Started'. That's how I swap between the two apps.

RE: Bricked nRf9160-DK

dan_cuspi — Tue, 22 Jan 2019 01:37:17 GMT

asset tracker is the default one