https://devzone.nordicsemi.com/f/nordic-q-a/126014/unable-to-program-custom-board-through-nrf52840-dkUnable to program external nRF52832 custom board using nRF52840 DK (P19 Debug Out) I am trying to program an external custom board based on the nRF52832 SoC using the nRF52840 DK as the SWD programmer. I followed the official Nordic documentation foren-USTelligent Community 13Tue, 09 Dec 2025 09:32:06 GMThttps://devzone.nordicsemi.com/thread/556535?ContentTypeID=1Tue, 09 Dec 2025 09:32:06 GMT137ad170-7792-4731-bb38-c0d22fbe4515:19401613-dcbd-451f-992a-af0e5a24288aPaKa<p>Try with the pinout for the nRF52833 DK, the nRF52840 DK User Guide should be updated shortly to match this. Hint; you have not connected all the lines listed in the user guide and the sense line for detecting the external target has changed. If you had the full connection this would not have been noticeable but short cutting makes it fail.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/556515?ContentTypeID=1Tue, 09 Dec 2025 06:33:58 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d177dfd4-97ff-4404-b953-794375656d03Niraj M<p>3.0.3</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/556448?ContentTypeID=1Mon, 08 Dec 2025 12:38:04 GMT137ad170-7792-4731-bb38-c0d22fbe4515:99d7488c-8911-4a93-b4c6-93b7e9a91489Kenneth<p>Hello,</p> <p>Which version of the nRF52840-DK do you have?</p> <p>Kenneth</p><div style="clear:both;"></div>