https://devzone.nordicsemi.com/f/nordic-q-a/13083/nrfgo-does-not-show-the-nrf51-dk-boardWhen I first got the nRF51-DK board... I was able to see this board on nRFgo. I then added the s130 hex file to it.. Since then when I connect this board, it does not show up in the nRFgo. I see the device as a D: mbed -drive in the windows exploreren-USTelligent Community 13Wed, 13 Apr 2016 14:03:56 GMThttps://devzone.nordicsemi.com/thread/49891?ContentTypeID=1Wed, 13 Apr 2016 14:03:56 GMT137ad170-7792-4731-bb38-c0d22fbe4515:824ea2aa-0a86-4f3c-82af-6103912c14f7tesc<p>What SoftDevice to use depends on the application. Some of the SDK examples uses a SoftDevice, others do not. The correct SoftDevice and version must be used for the application to work.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/49892?ContentTypeID=1Mon, 11 Apr 2016 08:39:11 GMT137ad170-7792-4731-bb38-c0d22fbe4515:490ed677-bb9b-4e10-acb2-8f4925b0ec2ctoashwin<p>I got it resolved.. I had to reset the device..</p> <ol> <li> <p>hold the reset button and power cycle. -&gt; now it does not show up as mbed device.</p> </li> <li> <p>then upload jlink.bin file.. (just dragging it into the drive. in the file-explorer) -&gt; dont remember where I got this bin file. But somebody can post the link.</p> </li> </ol> <p>Now its visible on nRFgo.</p><div style="clear:both;"></div>