https://devzone.nordicsemi.com/f/nordic-q-a/16651/dfu-errorsI am currently dealing with a strange problem when trying to use DFU OTA. When I enter DFU mode on Master Control Panel and try and update I get the following two error messages. &quot;Device does not have required DFU Service&quot; followed by &quot;Failed to openen-USTelligent Community 13Tue, 27 Sep 2016 13:43:40 GMThttps://devzone.nordicsemi.com/thread/63704?ContentTypeID=1Tue, 27 Sep 2016 13:43:40 GMT137ad170-7792-4731-bb38-c0d22fbe4515:db01eea8-7567-4ca7-8ed9-21cd85697c5ebjorn-spockeli<p>Do you get any errors if you use the example from the linked question? Are you sure that you have added all the snippets within the BLE_DFU_APP_SUPPORT ifdefs? Make sure that you have included dfu_app_handler_pm.c and not dfu_app_handler.c</p><div style="clear:both;"></div>