https://devzone.nordicsemi.com/f/nordic-q-a/81943/bricked-nrf52840-donglesI have 2 dongles that I&#39;ve somehow managed to brick (I don&#39;t remember the details on how i did it). One of them goes into DFU bootloader mode when I plug it in but shows up as an Unknown device on the Programmer app. The other used to be the same untilen-USTelligent Community 13Mon, 22 Nov 2021 11:52:10 GMThttps://devzone.nordicsemi.com/thread/340034?ContentTypeID=1Mon, 22 Nov 2021 11:52:10 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ca500ce0-24dd-4578-9001-c2c7c1b899b4Amanda Hsieh<p>Hi,&nbsp;</p> <p>Take a look at&nbsp;Recover after an accidental UICR erase section in this <a href="https://devzone.nordicsemi.com/guides/short-range-guides/b/getting-started/posts/nrf52840-dongle-programming-tutorial">tutorial</a>.&nbsp;</p> <p>Regards,<br />Amanda</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/339928?ContentTypeID=1Sun, 21 Nov 2021 17:26:06 GMT137ad170-7792-4731-bb38-c0d22fbe4515:75c8eafc-a11a-4858-ae4a-80dc876f726eUpballoon<p>Here&#39;s the error I get when I connect the first dongle to the programmer app:</p> <p><pre class="ui-code" data-mode="text">Error when fetching device versions: readFwInfo error</pre></p><div style="clear:both;"></div>