nrf5340 firmware updates MCUmgrhttps://devzone.nordicsemi.com/f/nordic-q-a/127966/nrf5340-firmware-updates-mcumgrI have and nrf5340 connected to debian system via uart. I&#39;m trying todo a flash update via the uart and the nrf5340 is unresponsive. The MCUmgr is not getting any response from the nrf5340, The uart port ttyMAX3 is wired and run corrrectly, the prj.confen-USTelligent Community 13Tue, 05 May 2026 19:01:49 GMTRE: nrf5340 firmware updates MCUmgrhttps://devzone.nordicsemi.com/thread/565915?ContentTypeID=1Tue, 05 May 2026 19:01:49 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3b70ade1-ab55-4747-a13d-488948a6c4f3DvAgas<p>THank you I&#39;ll look into it.<br /><br />I noticed that this message is not appearing in the log, even though i have the deine&nbsp; in the prj.conf file<br /><br /></p> <div><br /> <div><span>#if</span><span> </span><span>IS_ENABLED</span><span>(CONFIG_MCUMGR_TRANSPORT_UART)</span></div> <div><span>&nbsp; &nbsp; </span><span>LOG_INF</span><span>(</span><span>&quot;MCUmgr UART transport enabled on UART3&quot;</span><span>);</span></div> <div><span>#endif</span></div> <br /><br /><br /> <div> <div><span># --- System and Kernel ---</span></div> <div><span>CONFIG_HEAP_MEM_POOL_SIZE</span><span>=4096</span></div> <div><span>CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE</span><span>=2048</span></div> <div><span>CONFIG_SMF</span><span>=y</span></div> <div><span>CONFIG_HWINFO</span><span>=y</span></div> <div><span>CONFIG_NRF_APPROTECT_USE_UICR</span><span>=n</span></div> <br /> <div><span># --- Logging and Console ---</span></div> <div><span>CONFIG_LOG</span><span>=y</span></div> <div><span>CONFIG_USE_SEGGER_RTT</span><span>=y</span></div> <div><span>CONFIG_LOG_BACKEND_RTT</span><span>=y</span></div> <div><span>CONFIG_LOG_DEFAULT_LEVEL</span><span>=3</span></div> <div><span>CONFIG_CONSOLE</span><span>=y</span></div> <br /> <div><span># --- Device Drivers ---</span></div> <div><span>CONFIG_GPIO</span><span>=y</span></div> <div><span>CONFIG_NRFX_SPIM4</span><span>=y</span></div> <div><span>CONFIG_SERIAL</span><span>=y</span></div> <div><span>CONFIG_NRFX_UARTE3</span><span>=y</span></div> <div><span>CONFIG_UART_INTERRUPT_DRIVEN</span><span>=y</span></div> <div><span>CONFIG_I2C</span><span>=n</span></div> <div><span>CONFIG_SPI</span><span>=n</span></div> <br /> <div><span># --- Bluetooth ---</span></div> <div><span>CONFIG_BT</span><span>=y</span></div> <div><span>CONFIG_BT_PERIPHERAL</span><span>=y</span></div> <div><span>CONFIG_BT_DEVICE_NAME</span><span>=</span><span>&quot;ARAM_BLE_DV&quot;</span></div> <div><span>CONFIG_BT_HCI_IPC</span><span>=y</span></div> <br /> <div><span># --- C Library ---</span></div> <div><span>CONFIG_NEWLIB_LIBC</span><span>=y</span></div> <div><span>CONFIG_NEWLIB_LIBC_FLOAT_PRINTF</span><span>=y</span></div> <div><span>CONFIG_CBPRINTF_FP_SUPPORT</span><span>=y</span></div> <br /> <div><span># --- MCUmgr Core ---</span></div> <div><span>CONFIG_MCUMGR</span><span>=y</span></div> <div><span>CONFIG_ZCBOR</span><span>=y</span></div> <div><span>CONFIG_BASE64</span><span>=y</span></div> <br /> <div><span># --- MCUmgr Transport (UART) ---</span></div> <div><span>CONFIG_MCUMGR_TRANSPORT_UART</span><span>=y</span></div> <div><span>CONFIG_MCUMGR_TRANSPORT_UART_MTU</span><span>=512</span></div> <br /> <div><span># --- MCUmgr Groups ---</span></div> <div><span>CONFIG_MCUMGR_GRP_IMG</span><span>=y</span></div> <div><span>CONFIG_MCUMGR_GRP_OS</span><span>=y</span></div> <br /> <div><span># --- DFU / Flash Management ---</span></div> <div><span>CONFIG_BOOTLOADER_MCUBOOT</span><span>=y</span></div> <div><span>CONFIG_MCUBOOT_IMG_MANAGER</span><span>=y</span></div> <div><span>CONFIG_IMG_MANAGER</span><span>=y</span></div> <div><span>CONFIG_STREAM_FLASH</span><span>=y</span></div> <div><span>CONFIG_FLASH</span><span>=y</span></div> <div><span>CONFIG_FLASH_MAP</span><span>=y</span></div> <div><span>CONFIG_FLASH_PAGE_LAYOUT</span><span>=y</span></div> <br /> <div><span># --- External QSPI Flash (for MCUboot secondary slot) ---</span></div> <div><span>CONFIG_NORDIC_QSPI_NOR</span><span>=y</span></div> <div><span># --- Required for MCUmgr UART framing ---</span></div> <div><span>CONFIG_CRC</span><span>=y</span></div> <br /> <div><span># --- Driver for uart2 (modem), since overlay enables it ---</span></div> <div><span>CONFIG_NRFX_UARTE2</span><span>=y</span></div> </div> </div><div style="clear:both;"></div>RE: nrf5340 firmware updates MCUmgrhttps://devzone.nordicsemi.com/thread/565687?ContentTypeID=1Wed, 29 Apr 2026 13:22:39 GMT137ad170-7792-4731-bb38-c0d22fbe4515:79676df8-db01-4e1a-91ed-894f746644faAmanda Hsieh<p>Hi Dominic,</p> <p>Could you refer to this course&nbsp;<a href="https://academy.nordicsemi.com/courses/nrf-connect-sdk-intermediate/lessons/lesson-9-bootloaders-and-dfu-fota/topic/exercise-1-dfu-over-uart/">exercise-1-dfu-over-uart/</a>&nbsp;to check the required configs with your project?</p> <p>Regards,<br />Amanda H.&nbsp;</p><div style="clear:both;"></div>