https://devzone.nordicsemi.com/f/nordic-q-a/91648/i-need-to-build-mcu-boot-using-mcumgrDear Mate, I am using bl653_dvk board i followed this link clearly (+) Add DFU support to your application - Software - nRF Connect SDK guides - Nordic DevZone (nordicsemi.com) but when i am trying to Modify the Hello World sample i can build and flasingen-USTelligent Community 13Tue, 06 Sep 2022 08:24:59 GMThttps://devzone.nordicsemi.com/thread/384724?ContentTypeID=1Tue, 06 Sep 2022 08:24:59 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ce0cacc6-d754-4988-a77b-bf29e24ccab7Simon<p>In that tutorial RTT logging is used for the Hello World serial dfu sample, can you try to open an RTT terminal and check if you can see the logs? Take a look at <a href="https://devzone.nordicsemi.com/guides/nrf-connect-sdk-guides/b/software/posts/ncs-dfu#serial_testing">Serial DFU--&gt;Testing</a>&nbsp;for an explanation how to see the RTT logs:</p> <ul> <li><em><span>&quot;Next, install and open a software that can display the RTT logs. You can check out&nbsp;<a href="https://developer.nordicsemi.com/nRF_Connect_SDK/doc/1.7.1/zephyr/guides/tools/nordic_segger.html#rtt-console">Nordic nRF5x Segger J-Link --&gt; RTT Console</a>, or use the&nbsp;<a href="https://youtu.be/p2Tp-vz6PXA?list=PLx_tBuQ_KSqEt7NK-H7Lu78lT2OijwIMl&amp;t=116">integrated RTT terminal that comes with nRF Connect for VS Code</a>&quot;</span></em></li> </ul> <p><span>Best regards,</span></p> <p><span>Simon</span></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/384686?ContentTypeID=1Tue, 06 Sep 2022 04:24:33 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9ea131aa-d673-4126-b773-e7395c56d54aTharak<p>Thank you simon i am waiting for your reply</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/384665?ContentTypeID=1Mon, 05 Sep 2022 22:16:29 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2a98751a-a1bd-4792-9825-790ac62f0720Simon<p>Hello,</p> <p>I&#39;ll take a look at this tomorrow.</p> <p>Best regards,</p> <p>Simon</p><div style="clear:both;"></div>