https://devzone.nordicsemi.com/f/nordic-q-a/66771/code-crash-when-starting-lte-comunication-power-issueGreetings, we have a custom pcb with nrf9160 and are using nrf-sdk v1.3.0 and mfw v1.2.0 Sometimes when connecting to lte the code crashes: The code in question is as follows: So, presumably, the crash happens after this line in w_lte_lc_connecten-USTelligent Community 13Tue, 06 Oct 2020 13:05:23 GMThttps://devzone.nordicsemi.com/thread/273240?ContentTypeID=1Tue, 06 Oct 2020 13:05:23 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c7eaad7e-2258-4a89-b93e-36e6e05771a0Martin Lesund<p>Hi Tjaz,<br />There was been some rework in <a href="https://github.com/nrfconnect/sdk-nrf/commit/3098d43ab8fd5c309cfc92a6ac6b60d30a93a236" rel="noopener noreferrer" target="_blank">the system mode handling</a>&nbsp;(not included v1.3.0), but it is included in master branch.<br />So you could test this out by updating NCS:</p> <p><pre class="ui-code" data-mode="text">cd ncs/nrf git checkout master git pull west update #Then rebuild your project and flash it</pre>&nbsp;<br /><br />I would also recommend to maybe use <a href="https://github.com/nrfconnect/sdk-nrf/blob/master/samples/nrf9160/mqtt_simple/src/main.c#L435" rel="noopener noreferrer" target="_blank">modem_configure</a>() function in our NCS as reference.<br /><br />1. You could e.g. use the <a href="https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrfxlib/bsdlib/doc/api.html?highlight=bsd_recoverable_error_handler#_CPPv429bsd_recoverable_error_handler8uint32_t" rel="noopener noreferrer" target="_blank">bsd_recoverable_error_handler </a>function and add the necessary operations in that function. (e.g. in <a href="https://github.com/nrfconnect/sdk-nrf/blob/master/samples/nrf9160/at_client/src/main.c#L13" rel="noopener noreferrer" target="_blank">at_client we have a print out</a>)<br />2. You could try to use&nbsp;<span>bsd_shutdown() and then&nbsp;bsd_init() for this reset functionality.</span></p><div style="clear:both;"></div>