https://devzone.nordicsemi.com/f/nordic-q-a/53605/dfu-over-ble-with-nrf52840-dongleWe are currently using the 52840 DK board to do OTA DFU with BLE and the nrfutil. We connect the DK board to a linux machine and run the nrfutil with the dfu ble options and it loads firmware into the DK board. Then it DFU&#39;s over the air, the applicationen-USTelligent Community 13Thu, 24 Oct 2019 14:35:20 GMThttps://devzone.nordicsemi.com/thread/216669?ContentTypeID=1Thu, 24 Oct 2019 14:35:20 GMT137ad170-7792-4731-bb38-c0d22fbe4515:93339429-1e3d-4385-9efc-a0a1c623dbc8Jay<p>Thanks that was what I was looking for!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/216600?ContentTypeID=1Thu, 24 Oct 2019 11:49:12 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2f911e2f-61e0-4b5d-ab2b-70586821a012Vidar Berg<p>Hi,</p> <p>The dongle can be used with nrfutil, but first, you need to load the connectivity FW onto the dongle. This is easiest done by launching the Bluetooth Low Energy app in nRF connect for desktop (<a href="https://www.nordicsemi.com/Software-and-Tools/Development-Tools/nRF-Connect-for-desktop/Get-Started">link</a>) and click &quot;yes&quot; when it asks you to program the device.&nbsp;</p> <p><img src="https://devzone.nordicsemi.com/resized-image/__size/320x240/__key/support-attachments/beef5d1b77644c448dabff31668f3a47-30d9a02fe8624546a2920f16addbcbb8/pastedimage1571917646221v1.png" alt=" " /></p> <p>The dongle is ready to be used with nrfutil after the FW is loaded.&nbsp;</p><div style="clear:both;"></div>