Serial_LTE_Modem errors directly after boot

[winus]

Goodday dear viewer!

I am trying to get the Serial_LTE_Modem sample to work.

I added these prj.conf lines:

CONFIG_USE_SEGGER_RTT=n

CONFIG_RTT_CONSOLE=n

CONFIG_UART_CONSOLE=y

CONFIG_LOG_BACKEND_RTT=n

CONFIG_LOG_BACKEND_UART=y

CONFIG_NRF_CLOUD_CLIENT_ID_PREFIX="thing-plus-"

I got it built and flashed.

And this is what gets logged to the console:

Connected via Serial Port with settings COM9 115200 8n1 rtscts:off

*** Booting Zephyr OS build v3.2.99-ncs1 ***
[00:00:00.444,763] <inf> slm: Serial LTE Modem
[00:00:00.447,418] <err> nrf_cloud_client_id: Failed to get device UUID: -8
[00:00:00.447,418] <err> nrf_cloud_transport: Could not obtain configured client ID, error: -8
[00:00:00.447,448] <err> slm_gnss: Cloud could not be initialized, error: -8
[00:00:00.447,448] <err> slm_at: GPS could not be initialized: -8
[00:00:00.447,479] <err> slm: Failed to init at_host: -14

Any ideas on how to fix this?

I am using:

Thing_Plus NRF9160

Kind Regards,

Winus

[Naeem Maroof]

Hi Winus,

Thank you for contacting DevZone at NordicSemi.

[00:00:00.447,418] <err> nrf_cloud_client_id: Failed to get device UUID: -8

The error is coming from the function modem_jwt_get_uuids() which returns an error code when it is not able to "get the device and/or modem firmware UUID from modem".

Looks like your modem is not updated.

Could you follow this guide for (1) updating modem firmware (2) connecting to the nRFCloud and (3) testing asset tracker sample first: Starting with 9160

And then if it is successful, try with the sample you were working on.

With regards,

Naeem