Cannot connect to the cloud

[Danny Zadok]

Hello,

I got a new nRF9160 DK a couple of days ago. I followed the "Getting Started" to get connected to the cloud. But my board is getting connected to the LTE network but not to the cloud. 

On the cloud side I see the following error:

   There was an error adding your device: No device found for this id. The device has not yet been provisioned. Troubleshoot nRF Code 40412

On the device side I see the following error:

lte_lc.w_lte_lc_connect: Network mode: AT%XSYSTEMMODE=0,1,1,0

+CEREG: 2,"187A","00222267",9,0,0,"11100000","11100000"

lte_lc.parse_nw_reg_status: Network registration status: 2

+CEREG: 5,"187A","00222267",9,,,"11100000","11100000"

lte_lc.parse_nw_reg_status: Network registration status: 5

asset_tracker: Connected to LTE network

nrf_cloud_transport.nct_connect: IPv4 Address 0x362ad103

nrf_cloud_transport.nct_mqtt_connect: mqtt_connect requesting persistent session

<err> asset_tracker: Socket error: POLLHUP

asset_tracker: Connection was closed by the cloud.

Can someone please help me to figure out what is wrong? 
Thanks
Danny 

[Martin Lesund]

Hi Danny,

Have you upgraded the modem FW to the latest? https://www.nordicsemi.com/Products/Low-power-cellular-IoT/nRF9160/Download#infotabs 

I would also recommend that you use the latest application fw: https://www.nordicsemi.com/Software-and-tools/Development-Kits/nRF9160-DK/Download#infotabs 

[Danny Zadok]

Thanks for your quick reply.

I had the version of 22/4/2020 (nrf9160dk_fw_2020-04-29_bc7ade8b)

And it was doing "something" as I wrote in my previous 

Now I upgraded to the new version that you sent (23/9/2020), but nothing happens. The AT commands are not responded at all.

Danny

[Martin Lesund]

Hi Danny,
Make sure you are flashing the modem firmware and the application firmware correctly.
Follow the steps given in the documentation: https://infocenter.nordicsemi.com/index.jsp?topic=%2Fug_nrf91_dk_gsg%2FUG%2Fnrf91_DK_gsg%2Fupdating_firmware.html 

We also have this quick guide on Youtube on how this can be done.

Please connect LTE link monitor and disable "automatic request" setting (down right corner) and then reset the nRF91DK so we could get the bootup sequence.

best regards,
Martin L.

[Danny Zadok]

Thank Martin

I did follow the manual. The manual says download the version that is found in the image_full. But this folder dos not exist in the September's version. It did exist in the April' version:

So I used the version that is found in the img_fota_dfu_hex folder.

Surprisingly, the size of these files are much smaller than April's version (~80K).

Danny

[Martin Lesund]

Hi Danny,
If you look in the Contents.txt file you can see the description of each file:

Package contents:
img_app_bl/           Full application images, including bootloader. Updated only via debug probe.
img_fota_dfu_hex/     Application only. Use with nRFConnect for Desktop Programmer application.
img_fota_dfu_bin/     Application only. Binary format. For cloud update, mcumgr.

Please try to flash the application: "nrf9160dk_asset_tracker_ltem_2020-09-23_b6ad40d0.hex"

and then "update modem" and select the "mfwnrf9160121.zip".



Then open LTE Link monitor and press the reset button on the DK to get the bootup sequence in the terminal.

Best regards,

Martin L.