https://devzone.nordicsemi.com/f/nordic-q-a/110411/nrf52840-holyiot-problem-flash-codei have this issue when try to flash code to nrf52840 holyiot nr5 sdk 17.1.0 nRF_DeviceFamilyPack 8.59.0 jlink-arm v9 arm-mdk 5.39.0 complier v5.06en-USTelligent Community 13Mon, 22 Apr 2024 09:03:33 GMThttps://devzone.nordicsemi.com/thread/479910?ContentTypeID=1Mon, 22 Apr 2024 09:03:33 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1a4bf0a4-8ece-4ec5-9fb9-54444a01ed26Jared<p>Hi there,</p> <p>From your <a href="https://devzone.nordicsemi.com/f/nordic-q-a/110353/trouble-with-keil-c-5-for-pca1056">previous </a>case, I can see that you&#39;re using ST-link, this is not supported by us. We only support J-link from Segger,</p> <p>regards</p> <p>Jared&nbsp;</p><div style="clear:both;"></div>