https://devzone.nordicsemi.com/f/nordic-q-a/15523/i-have-a-nrf51422-dk-and-but-i-m-not-able-to-load-the-blinky-program-into-thisEverytime i run the code , a msg pops up &quot;device not found&quot;. Can anybody kindly tell me how to do this? (I am using keil)en-USTelligent Community 13Wed, 03 Aug 2016 12:23:02 GMThttps://devzone.nordicsemi.com/thread/59288?ContentTypeID=1Wed, 03 Aug 2016 12:23:02 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7d4d08b3-2f4d-48d1-9de0-7fee993159baJui-Chou (Rick) Chung<p>Hello Sara,</p> <p>I assume this resulted from the J-Link configuration. Please check the debugger setup. Here&#39;s the instruction:</p> <p>step 1. click the &quot;option for target&quot;</p> <p><img src="https://devzone.nordicsemi.com/cfs-file/__key/communityserver-discussions-components-files/4/Picture1.png" alt="image description" /></p> <p>step 2. check the tab &quot;Debug&quot;, if you are using the DK from Nordic, make sure the configuration set in &quot;J-LINK / J-TRACE Cortex&quot;</p> <p><img src="https://devzone.nordicsemi.com/cfs-file/__key/communityserver-discussions-components-files/4/Picture3.png" alt="image description" /></p> <p>step 3. make sure the J-Link OB has been detected <img src="https://devzone.nordicsemi.com/cfs-file/__key/communityserver-discussions-components-files/4/2526.Picture3.png" alt="image description" /></p> <p>Hope the upon steps can help you.</p><div style="clear:both;"></div>