https://devzone.nordicsemi.com/f/nordic-q-a/98950/programming-custom-nrf5340-pcbHello, I am designing a custom PCB using an nRF5340 and am unsure what my options are for how to program it. I&#39;ve seen a number of forum posts saying that you can program a custom board using an nRF5340-DK, but unfortunately, I only have two nRF5340en-USTelligent Community 13Mon, 24 Jun 2024 17:15:37 GMThttps://devzone.nordicsemi.com/thread/490415?ContentTypeID=1Mon, 24 Jun 2024 17:15:37 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c82ac1e0-0e23-46d9-89ec-fd62a5378eaaNguyen Hoan Hoang<div class="content full threaded-reply-content user-defined-markup" data-replyid="490412" data-userid="3482" data-permalink="~/f/nordic-q-a/99326/nrf5340-production-programming-dfu/490412"> <div class="content"> <p>Low cost production programming of the nRF5340 is now available. &nbsp;It can parallel flash multiple boards at once.&nbsp;</p> <p>It is available at mouser&nbsp;<a href="https://www.mouser.com/ProductDetail/I-SYST/CS-BLYST-08?qs=T3oQrply3y%252BhSfpc3hK%2FLg%3D%3D">https://www.mouser.com/ProductDetail/I-SYST/CS-BLYST-08?qs=T3oQrply3y%252BhSfpc3hK%2FLg%3D%3D</a></p> <p>Parallel flashing software download here&nbsp;<a href="https://sourceforge.net/projects/idaplinkfirmware/files/">https://sourceforge.net/projects/idaplinkfirmware/files/</a></p> <p><img alt=" " src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/Screenshot-2024_2D00_06_2D00_24-at-1.03.15_2F20_PM.png" /></p> <div></div> </div> </div> <div class="edit-form"></div> <div class="actions meta default"></div><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/421591?ContentTypeID=1Thu, 20 Apr 2023 20:37:37 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9be10aa8-86d1-4808-92da-071a3be6045ekhelmutlord<p>Your best bet is to expose the SWD pins on the nRF5340. There are a number of options for connecting to those pins including traditional 10-pin headers and the TagConnect &quot;plug of nails.&quot;&nbsp;Nordic supports the J-Link series of debuggers from SEGGER but other options are available that may require more configuration. I would recommend either purchasing a devkit to use as a debugger or purchasing a SEGGER J-Link.</p> <p>Thanks for the question.</p><div style="clear:both;"></div>