https://devzone.nordicsemi.com/f/nordic-q-a/13868/nrf51-deadHello, I&#39;ve got a problem with my nRF51 DK. When I attach it to the USB port the drive doesn&#39;t appear on Windows explorer and green diode doesn&#39;t flash too. I&#39;ve been using it without any problems so far. Few days ago I tried to supply my incrementalen-USTelligent Community 13Wed, 18 May 2016 10:43:27 GMThttps://devzone.nordicsemi.com/thread/52976?ContentTypeID=1Wed, 18 May 2016 10:43:27 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4d31d677-f385-4893-ba03-44e4b736e3a8Susheel Nuguru<p>Sure, use the debugout port P19 of nRF52 DK to SWD lines of the chip under test.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/52977?ContentTypeID=1Wed, 18 May 2016 09:56:06 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ae88fb1d-57a5-4a6b-8626-c07bfdccb8a1octopus<p>Ok, thank you for this answer. I&#39;m going to check it as soon as possible. If it&#39;ll turn out, that nrf51 kit is fried - is it possible to program or erase it with nrf52 DK?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/52978?ContentTypeID=1Wed, 18 May 2016 05:39:25 GMT137ad170-7792-4731-bb38-c0d22fbe4515:af60d644-c16c-4fa4-830d-e2751521b9a9Susheel Nuguru<p>connect it to usb and see if the command &quot;nrfjprog --recover&quot; is able to do something, if not then seems like it is fried.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/52975?ContentTypeID=1Tue, 17 May 2016 09:22:50 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b350a6f8-72f1-486b-934b-ab95884f85caoctopus<p>UP!</p> <p>Could someone help me or give any advice?</p><div style="clear:both;"></div>