https://devzone.nordicsemi.com/f/nordic-q-a/85271/case-about-nrf9160dk-v0-8-5-2019-07HI dk:PCA10090 0.8.5 modem: mfw_nrf9160_1.2.3.zip（ This DK board supports modems up to this version ） ncs v1.9.0 example :serial_lte_modem The NB card has been verified to be OK The merged_serial_LTE_modem_V1.9. hex is OK Test networken-USTelligent Community 13Wed, 02 Mar 2022 01:01:41 GMThttps://devzone.nordicsemi.com/thread/355671?ContentTypeID=1Wed, 02 Mar 2022 01:01:41 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b818f7da-1bfe-4f73-97d6-aa97d7ce0afepeter.min<p>Hi&nbsp;<span>Albrecht Markus Schellenberger,</span></p> <p><span>This module requires the following instructions specially configured</span></p> <p>AT%XSYSTEMMODE=0,1,0,0</p> <p>Thank you very much.<br />Kind regards,<br />Peter.Min</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/355440?ContentTypeID=1Tue, 01 Mar 2022 08:13:28 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4093cf89-1bb4-40d2-99ad-03fa26359435Albrecht Markus Schellenberger<p><span lang="en-GB">Hello </span><span lang="en-GB">Peter,</span></p> <p><span lang="en-GB">i</span><span lang="en-GB">t seems like the modem is not able to find a network cell which it can connect to. Does the modem find any available network at all? You can check this by using <a href="https://infocenter.nordicsemi.com/topic/ref_at_commands/REF/at_commands/nw_service/cops_test.html">+COPS</a>/<a href="https://infocenter.nordicsemi.com/topic/ref_at_commands/REF/at_commands/nw_service/cops_nordic_test.html">%COPS</a>.</span></p> <p><span lang="en-GB">Are you facing this behaviour in NCS v1.9.0 only? Or does the modem operate as expected with earlier versions?</span></p> <p><span lang="en-GB">Regards,</span></p> <p><span lang="en-GB">Markus</span></p><div style="clear:both;"></div>