https://devzone.nordicsemi.com/f/nordic-q-a/38295/how-to-verify-if-the-dongle-is-flashed-with-the-hex-fileI have flashed the the mesh serial hex file to nRF52840 dongle through nRF connect programmer application. I am getting following error 1. Reopen device failed 2. Nordic DFU Trigger Interface was not found 3. Device not found due to failure Haveen-USTelligent Community 13Mon, 10 Sep 2018 14:26:42 GMThttps://devzone.nordicsemi.com/thread/148065?ContentTypeID=1Mon, 10 Sep 2018 14:26:42 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2ad5f75b-8c09-46dc-a293-8e50ff545277Vidar Berg<p>Hi,&nbsp;</p> <p>The mesh SDK does not include support for the nRF52840 dongle yet. However, I don&#39;t see any reasons why it would not work as long as you&nbsp;make sure of the following:</p> <p>1. Build with correct pinout for the dongle (different pinout for LEDs etc) :&nbsp;<a href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v15.1.0/sdk_for_custom_boards.html?cp=4_0_0_1_5">http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v15.1.0/sdk_for_custom_boards.html?cp=4_0_0_1_5</a>. There are several examples in the regular SDK that have examples configured for the dongle (PCA100059 projects). You may use those as reference.&nbsp;&nbsp;</p> <p>2. Application code does not overlap with pre-programmed bootloader.</p> <p>The error messages you got in the programmer app doesn&#39;t mean that the DFU failed, just that it was unable to re-connect to the dongle. This is expected as the mesh example does not enable the USB interface. You can enter DFU mode again by pressing the reset button. Warning messages will probably improve in the final version.</p> <p>Memory layout of pre-programmed FW:</p> <p><img src="https://devzone.nordicsemi.com/resized-image/__size/320x240/__key/support-attachments/beef5d1b77644c448dabff31668f3a47-2d584ef7000a42b5bb0a28d52b22bead/memory-layout.png" alt=" " />&nbsp;</p><div style="clear:both;"></div>