https://devzone.nordicsemi.com/f/nordic-q-a/115201/re-programming-nrf52840-dk-with-debuggerHello, I am attempting to use a J-Link or a FORTE programmer to interface with the debug port to upload a new binary/program to my board. Is this possible? I am trying to use the VDD, GND, SWCLK, and SWDIO pins. Is there anything I need to do beforehanden-USTelligent Community 13Wed, 02 Oct 2024 20:12:40 GMThttps://devzone.nordicsemi.com/thread/504762?ContentTypeID=1Wed, 02 Oct 2024 20:12:40 GMT137ad170-7792-4731-bb38-c0d22fbe4515:81bec60d-79eb-4166-bbdf-a62a290b713enordicator_prim3<p>Hi,</p> <p></p> <p>Yes, if sw6 is set to &quot;default&quot; and not &quot;nRF only&quot; then you can use the debug in connector to use Jlink.</p> <p></p> <p><img style="max-height:240px;max-width:320px;" src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/pastedimage1727899941607v1.png" alt=" " /></p><div style="clear:both;"></div>