https://devzone.nordicsemi.com/f/nordic-q-a/75297/unable-to-connect-nrf52840-dk-to-nrf-connectI&#39;m struggling to get my nRF52840 DK to appear in nRF Connect (3.6.1), but I have no issues with connecting the nRF52840 Dongle. I have been using this hardware for a couple of months as a BLE Sniffer, but I wanted today to try out the HR Monitor exampleen-USTelligent Community 13Wed, 19 May 2021 00:01:28 GMThttps://devzone.nordicsemi.com/thread/310275?ContentTypeID=1Wed, 19 May 2021 00:01:28 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a787a75b-0258-469e-8396-f83e9735e26dCampbell McGrouther<p>I was able to fix this issue by erasing the flash memory via the cmd line.&nbsp;</p> <p>&gt; nrfjprog -e</p> <p>I can now write the example hex files to the device without issue.&nbsp;</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/310271?ContentTypeID=1Tue, 18 May 2021 22:22:07 GMT137ad170-7792-4731-bb38-c0d22fbe4515:bc2418ef-9fb4-4919-a4b0-cba4d6e466c4Campbell McGrouther<p>Here is what I see when connecting the nRF5280 Dongle:<br /><img height="297" src="https://mypastebin.s3-us-west-2.amazonaws.com/nrf52840Dongle.png" width="394" alt=" " /></p> <p></p> <p>And with the nRF5280 DK:</p> <p><img height="297" src="https://mypastebin.s3-us-west-2.amazonaws.com/nRF52840DK.png" width="337" alt=" " /></p><div style="clear:both;"></div>