https://devzone.nordicsemi.com/f/nordic-q-a/121282/getting-nb-iot-demo-running-on-thingy-91xHi, I believe the default application on Thingy91x uses LTE-m to connect, which is working fine. How do we make it use only nB-IoT? For Thingy91, there is a guide Getting NB-IoT Demo running on Thingy:91 However, there is no equivalent to images_dfu_hexen-USTelligent Community 13Thu, 08 May 2025 15:27:35 GMThttps://devzone.nordicsemi.com/thread/534506?ContentTypeID=1Thu, 08 May 2025 15:27:35 GMT137ad170-7792-4731-bb38-c0d22fbe4515:65c47fc5-ff46-4235-a7b8-e0a296da9419dejans<p>Hi,<br /><br />You can try to use&nbsp;<a href="https://docs.nordicsemi.com/bundle/ref_at_commands_nrf91x1/page/REF/at_commands/mob_termination_ctrl_status/xsystemmode_set.html">%XSYSTEMMODE</a>&nbsp;to choose NB-IoT as preferred mode option. <br />Thingy91X supports&nbsp;<a href="https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/app_dev/device_guides/thingy91x/thingy91x_features.html#lte-m_nb-iot_switching">mode switching</a>&nbsp;which allows for modem to connect in alternative mode if connection in preferred mode fails.<br /><br />Best regards,<br />Dejan</p><div style="clear:both;"></div>