https://devzone.nordicsemi.com/f/nordic-q-a/124943/dfu-on-ncs-v3-1-1Hi, DFU over UART is failing on NCS V3.1.1. I have a project file that works fine with V3.1.0. When I query the image information, MCU responds immediately. But when I rebuild&amp;flash the project with V3.1.1, MCU is un-responsive to the MCUmgr commandsen-USTelligent Community 13Mon, 20 Oct 2025 07:00:57 GMThttps://devzone.nordicsemi.com/thread/551885?ContentTypeID=1Mon, 20 Oct 2025 07:00:57 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e82ac1d5-28ac-4182-8056-f7a322e698b5Emre Bayraktar<p>Hi,&nbsp;</p> <p></p> <p>Yes it has worked with the sample. Thanks.&nbsp;</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/551444?ContentTypeID=1Tue, 14 Oct 2025 13:23:24 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b506e970-9408-4168-9b0a-5174d90f0a71Sigurd Hellesvik<p>Hi,</p> <p>Here is from the&nbsp;<a href="https://docs.nordicsemi.com/bundle/ncs-latest/page/zephyr/samples/subsys/mgmt/mcumgr/smp_svr/README.html">SMP Server sample</a>&nbsp;on v3.1.1, with a nRF54L15DK:</p> <p><img style="max-height:240px;max-width:320px;" src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/pastedimage1760448127122v1.png" alt=" " /></p> <p>Can you try to reproduce with a sample?</p> <p>Regards,<br />Sigurd Hellesvik</p><div style="clear:both;"></div>