https://devzone.nordicsemi.com/f/nordic-q-a/102610/nrf9160-v2-4-0-changes-to-modem_info_string_get-functionDevice being used is an nRF9160 (Circuit Dojo nRF9160 Feather to be exact). Development platform is MacOS (2015 MacBook Pro 15&quot;, Intel) with macOS Ventura v13.5 installed. The toolchains were installed with nRFconnect through the toolchain installeren-USTelligent Community 13Sun, 06 Aug 2023 01:02:17 GMThttps://devzone.nordicsemi.com/thread/440003?ContentTypeID=1Sun, 06 Aug 2023 01:02:17 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e937170f-1abc-4a11-a8e3-c3a4c5912026aldras<p>Adding the following code before the call to modem_info_string_get() resolves the error.</p> <p>Looking at the sample project below revealed the required change.</p> <p><span>/opt/nordic/ncs/v2.4.1/nrf/samples/nrf9160/http_update/application_update/src/main.c:191</span></p> <p><pre class="ui-code" data-mode="text"> err = nrf_modem_lib_init(); if (err) { printk(&quot;Failed to initialize modem lib, err: %d\n&quot;, err); }</pre></p> <p>I will mark this as resolved, and hope this information helps someone else who has the same issue.</p><div style="clear:both;"></div>