Modem library initialization failed, error: 65552

[Tom.Fu]

Dear Support Team

I have successfully programmed the modem firmware to the  nRF9160 DK via the Cellular Monitor app on the nRF Connect for Desktop.

And I have also successfully programmed the at client sample to the nRF9160 DK.

But it got an issue of "Modem library initialization failed, error: 65552" after I connected DK to the Serial Monitor app on the nRF Connect for Desktop and pressed the REST Botton on the DK. The log output like the screenshot show below.

The nRF9160 DK I use is the version of v0.8.2.

How should I do to solve this problem? Many thanks.

[Naeem Maroof]

Hello,

Thank you for contacting DevZone at NordicSemi.

I see that you are using an older version of DK, probably a PDK.

May I suggest you to use the latest hardware, and the modem firmware.

Also, the function nrf_modem_lib_init() in the at_client sample calls the nrf_modem_init() function that should return a negative error code:

We also recommend to use the latest version of NCS.

Let me know if you get the same (or similar error) on the other /new DK.

With regards,
Naeem