https://devzone.nordicsemi.com/f/nordic-q-a/77709/dfuhi, i am adding dfu feature to ble_uart code. i did all steps as explained in https://devzone.nordicsemi.com/f/nordic-q-a/48872/how-to-merge-one-application-with-dfu-feature . my code is compiled properly.when i program it in nrf52dk it does noten-USTelligent Community 13Wed, 21 Jul 2021 14:14:16 GMThttps://devzone.nordicsemi.com/thread/321165?ContentTypeID=1Wed, 21 Jul 2021 14:14:16 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3497a915-45f1-4474-a1af-4df2bd2d122dHung Bui<p>Hi Harry,&nbsp;</p> <p>When something doesn&#39;t work as it should, please try to debug. First, check the log, second try to debug and step into the code to see if there is any assertion.&nbsp;<br />We can&#39;t help if you simply just say &quot;it does not advertise anything&quot;&nbsp;</p><div style="clear:both;"></div>