https://devzone.nordicsemi.com/f/nordic-q-a/100747/nrf52840-dk-hw-rev-3-0-1-gpio-programming-pinsDear Forum, We successfully used the nrf52840DK v.2.0.1 as programming tool for a custom board, the wiring was as depicted here: https://devzone.nordicsemi.com/f/nordic-q-a/84893/programming-a-custom-board-with-an-nrf52840-dev-kit Now, with newen-USTelligent Community 13Tue, 13 Jun 2023 11:33:20 GMThttps://devzone.nordicsemi.com/thread/430717?ContentTypeID=1Tue, 13 Jun 2023 11:33:20 GMT137ad170-7792-4731-bb38-c0d22fbe4515:bbc750f4-888f-49ed-bcdd-62d1b727fc67Priyanka<p>Hi Richard,</p> <p>In the new revision, the VTG had been renamed to SWD_SEL.</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/pastedimage1686655924998v1.png" alt=" " /></p> <p>You just need to&nbsp;<span><span dir="ltr">pull SWD_SEL to VDD, this enables debug/programming out on P20.&nbsp;Also the usual SWD_IO and SWD_CLK connections need to be done along with a direct GND connection between both the boards.</span></span></p> <p><span><span dir="ltr">Best Regards,</span></span></p> <p><span><span dir="ltr">Priyanka</span></span></p><div style="clear:both;"></div>