https://devzone.nordicsemi.com/f/nordic-q-a/62962/issue-with-dfu-over-serial-using-mcumgr-for-nrf5340So, i have been trying to perform a DFU over serial using the method mentioned here by Hung Bui. Here is a summary of what i did: - build and flash mcuboot - build and flash smp_svr and i get this: - then i check using mcumgr command: mcumgren-USTelligent Community 13Thu, 25 Jun 2020 00:24:05 GMThttps://devzone.nordicsemi.com/thread/256788?ContentTypeID=1Thu, 25 Jun 2020 00:24:05 GMT137ad170-7792-4731-bb38-c0d22fbe4515:fb76720a-bc57-42a6-9566-9309886d368dsethu<p>Thank you for your reply.&nbsp;</p> <p>I was able to solve this problem after using the new SDK version 1.3.0 and recompiling all programs used. <br />Now I&#39;m able to see the output from the hello world program.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/256673?ContentTypeID=1Wed, 24 Jun 2020 11:43:34 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4b52edb4-00fa-437d-af9b-aec59d935b69Hung Bui<p>Hi Sethu,&nbsp;</p> <p>Have you tried to upload a new image instead of using the test image ? just do&nbsp;<span>image upload on an app_update2.bin for example.&nbsp;<br />I haven&#39;t tried the test image but I assume that&#39;s the expected behavior after the reboot, the test image replaced the original image and do nothing.&nbsp;</span></p><div style="clear:both;"></div>