https://devzone.nordicsemi.com/f/nordic-q-a/47259/recover-nrf52840-dk-after-power-failureI was trying to measure the current used by the nRF52840 on the DK. But it seems like i have messed up. The debugger LED does not light up The nRF52840 SOC seems to be okay, since the LEDs are flashing once, which is done in the program i flasheden-USTelligent Community 13Mon, 20 May 2019 13:11:59 GMThttps://devzone.nordicsemi.com/thread/187939?ContentTypeID=1Mon, 20 May 2019 13:11:59 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7285a928-85c2-401d-a00e-078458121045Bj&#248;rn Kvaale<p>If you have an issue, I recommend first looking through DevZone to see if you can find a similar case to the one you are looking for or by opening up a new DevZone case <a href="https://devzone.nordicsemi.com/f/nordic-q-a">here</a>.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/187727?ContentTypeID=1Sat, 18 May 2019 15:54:26 GMT137ad170-7792-4731-bb38-c0d22fbe4515:157259f6-8ce3-4271-a089-101decba9878Venkat<p>Hi Bjorn I am a student and I need your help How Can I contact through personal message</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/187187?ContentTypeID=1Wed, 15 May 2019 09:58:48 GMT137ad170-7792-4731-bb38-c0d22fbe4515:841da60a-2b8d-4da9-87f8-ff6e8e4c55eeBj&#248;rn Kvaale<p>Just download the interface MCU FW for J-Link <a href="https://www.nordicsemi.com/Software-and-Tools/Development-Kits/nRF52840-DK/Download#infotabs">here </a>&amp; drag &amp; drop it to the Bootloader drive. You can then reset the kit &amp; you should see it appear as a JLINK drive again.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/186950?ContentTypeID=1Tue, 14 May 2019 11:58:33 GMT137ad170-7792-4731-bb38-c0d22fbe4515:889ea862-45bd-4afd-b940-6ec62b3730dcrico<p>I just recognised, in the case i press the reset button while powering thr DK, it is recognised as a USB Flash device only, named BOOTLOADER. Is there a way to use this to reprogram it?</p><div style="clear:both;"></div>