https://devzone.nordicsemi.com/f/nordic-q-a/18235/running-ble-uart-example-runs-only-in-debug-modeBLE UART run example runs in debug mode and able to see the BLE in the nrfconnect using Jlink debugger When the Jlink debugger and power supply is provided we are not see the BLE in the nrfconnect again if the code is flash able to see the BLE Sameen-USTelligent Community 13Wed, 07 Dec 2016 21:56:04 GMThttps://devzone.nordicsemi.com/thread/70407?ContentTypeID=1Wed, 07 Dec 2016 21:56:04 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5074311f-f121-4945-956c-160327074d2dRoger Clark<p>Are you using the examples without modifying them ?</p> <p>Did you design your own hardware ? If so its possible that the board is latched into SWD / Debug mode when you power it up.</p> <p>I think you may need a pulldown on the SWCLK pin to prevent this happening.</p><div style="clear:both;"></div>