https://devzone.nordicsemi.com/f/nordic-q-a/43320/pca10059-bootloaderHi, Apologies if this has been asked before. I am interested in trying out the Adafruit arduino implementation for the NRF52840. The implementation uses it&#39;s own bootloader and is fairly simple to get going on the DK as it has the built in Segger. Howeveren-USTelligent Community 13Mon, 04 Feb 2019 15:31:48 GMThttps://devzone.nordicsemi.com/thread/169351?ContentTypeID=1Mon, 04 Feb 2019 15:31:48 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8931e267-326c-475c-8f22-c595bf2a0808dhm<p>I thought that might be the case.....&nbsp; &nbsp;I guess I&#39;ll have to go and break my dongles by myself!</p> <p>Many thank for your time,</p> <p>Dave</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/169327?ContentTypeID=1Mon, 04 Feb 2019 14:26:02 GMT137ad170-7792-4731-bb38-c0d22fbe4515:894c288a-f9f5-4b69-9a2e-e744f28e34dbSimonr<p>Hi Dave</p> <p>We do not have an &quot;unlocking&quot; bootloader, so you have to get your hands dirty I guess. If we had one, it would likely be very easy to put the dongle in a state where you would have to connect a debugger to recover it, which probably cause more trouble than it is worth.&nbsp;</p> <p>Best regards,</p> <p>Simon</p><div style="clear:both;"></div>