https://devzone.nordicsemi.com/f/nordic-q-a/127679/issue-with-mcumgr-with-nrf54l05# Console disabled - uart30 used exclusively for MCUmgr SMP CONFIG_SERIAL = y CONFIG_CONSOLE = y CONFIG_UART_CONSOLE = y CONFIG_PRINTK = y CONFIG_LOG = y CONFIG_MAIN_STACK_SIZE = 8192 # ENABLE INTERNAL OSCILLATOR CONFIG_CLOCK_CONTROL_NRF_K32SRC_RCen-USTelligent Community 13Tue, 07 Apr 2026 11:49:25 GMThttps://devzone.nordicsemi.com/thread/564507?ContentTypeID=1Tue, 07 Apr 2026 11:49:25 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b838f54c-3f95-4b4c-bd82-1ea3cf2fa49bHung Bui<p>Hi Yash,&nbsp;<br />Have you tried to follow our guide in the Nordic Devacademy&nbsp; ?&nbsp;<br /><a href="https://academy.nordicsemi.com/courses/nrf-connect-sdk-intermediate/lessons/lesson-9-bootloaders-and-dfu-fota/topic/exercise-1-dfu-over-uart/">https://academy.nordicsemi.com/courses/nrf-connect-sdk-intermediate/lessons/lesson-9-bootloaders-and-dfu-fota/topic/exercise-1-dfu-over-uart/</a></p> <p>Have you tried other command such as the&nbsp;<span>newtmgr</span> image list&nbsp; ?&nbsp;</p> <p>I just want to check if the SMP protocol works.&nbsp;<br /><br />If you upload a very small image (&lt;1kB) would it work ? Any reason it&#39;s a&nbsp;<span>myfile.txt ? Have you simply upload a binary file of an application ?</span></p><div style="clear:both;"></div>