https://devzone.nordicsemi.com/f/nordic-q-a/110311/swaping-imageHello, it&#39;s a bit urgent, I want it as soon as possible. I made a child image for the MCU boot. my problem is, while compiling code it says the undefined reference to &quot;mcuboot_swap_type()&quot;. can anyone tell me what I am doing wrong? all the files are givenen-USTelligent Community 13Thu, 18 Apr 2024 09:08:22 GMThttps://devzone.nordicsemi.com/thread/479371?ContentTypeID=1Thu, 18 Apr 2024 09:08:22 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1241d32f-1527-4ee2-97a6-afa0a06febe2Vishal Soni<p>by making the mcuboot.conf empty<br />updating nrf connect SDK&nbsp;<br />and added some line to the prj.conf all worked.<br /><br /><br /><strong>prj.conf</strong><br /><br /><pre class="ui-code" data-mode="text"># MCUBOOT CONFIG_BOOTLOADER_MCUBOOT=y CONFIG_IMG_MANAGER=y CONFIG_STREAM_FLASH=y CONFIG_MCUBOOT_IMG_MANAGER=y CONFIG_IMG_ERASE_PROGRESSIVELY=y CONFIG_SECURE_BOOT=y CONFIG_BUILD_S1_VARIANT=y CONFIG_PM_EXTERNAL_FLASH_MCUBOOT_SECONDARY=n # Settings CONFIG_FLASH=y CONFIG_FLASH_PAGE_LAYOUT=y CONFIG_FLASH_MAP=y CONFIG_FCB=y CONFIG_SETTINGS=y CONFIG_SETTINGS_FCB=y CONFIG_MPU_ALLOW_FLASH_WRITE=y # Button/LED support CONFIG_DK_LIBRARY=y # System CONFIG_HEAP_MEM_POOL_SIZE=8192 CONFIG_MAIN_STACK_SIZE=8192 CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=8192 CONFIG_ASSERT=y CONFIG_REBOOT=y CONFIG_FPU=y CONFIG_PICOLIBC_IO_FLOAT=y # Logging CONFIG_LOG=y CONFIG_LOG_MODE_IMMEDIATE=y CONFIG_UART_INTERRUPT_DRIVEN=y</pre></p><div style="clear:both;"></div>