https://devzone.nordicsemi.com/f/nordic-q-a/87692/acconeer-xm122-doesn-t-show-up-as-a-j-link-device-in-segger-embedded-studioHello, I have got the Acconeer XM122 module (v2.4) and the Acconeer XB122 module (v1.3). The XM122 is connected to the XB122 which is like a breakout board for the XM122. The XB122 is connected to my PC by an USB cable. I want to program and flash theen-USTelligent Community 13Sun, 08 May 2022 19:46:14 GMThttps://devzone.nordicsemi.com/thread/366817?ContentTypeID=1Sun, 08 May 2022 19:46:14 GMT137ad170-7792-4731-bb38-c0d22fbe4515:95d99791-1448-421a-9c9e-94f6ce1c9c0b4lambda<p>Hi J&oslash;rgen,</p> <p>thank you for your answer and the links! I didn&#39;t notice that the XM122/XB122 hasn&#39;t got a J-Link debugger chip, sorry. I have got an nRF52-DK, therefore I&#39;ll try this method.</p> <p>Many thanks!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/366815?ContentTypeID=1Sun, 08 May 2022 16:05:01 GMT137ad170-7792-4731-bb38-c0d22fbe4515:10e7ecb3-caf4-4673-9d5e-7d2a823eb4e0J&#248;rgen Holmefjord<p>Hi,</p> <p>From what I can see from the <a href="https://eu.mouser.com/pdfDocs/GettingStartedGuideXM122.pdf">Acconeer XM122-XB122 Getting Started Guide</a>, none of these boards contains a Segger J-Link debugger chip.</p> <p>In order to program/debug the board through J-Link, you need to connect a J-Link device to the SWD interface of the nRF52840 chip. According to the guide, there is a 10-pin Serial Wire Debug header on the XB122 board. If you do not have a standalone J-Link device, you can use the <a href="https://infocenter.nordicsemi.com/topic/ug_nrf52840_dk/UG/dk/hw_debug_out.html">debug out port</a> of one of our DKs. If you do not have a J-Link device or DK, the board can be programmed over serial DFU using <a href="https://infocenter.nordicsemi.com/topic/ug_nrfutil/UG/nrfutil/nrfutil_intro.html">nrfutil</a>, as described in the guide.</p> <p>Best regards,<br />Jørgen</p><div style="clear:both;"></div>