https://devzone.nordicsemi.com/f/nordic-q-a/81540/flashing-nrf51822I was flashing nRF51822 used ST-link, with file hex from SDK example, so now i want flashing a different .hex. How can i do that? I try do like before but I CAN&#39;Ten-USTelligent Community 13Wed, 10 Nov 2021 09:35:18 GMThttps://devzone.nordicsemi.com/thread/338322?ContentTypeID=1Wed, 10 Nov 2021 09:35:18 GMT137ad170-7792-4731-bb38-c0d22fbe4515:71722311-425f-4899-80ff-9c27c1f63c88H&#229;kon Alseth<p>Hi,</p> <p>&nbsp;</p> <p>We do not support openocd/st-link, so please ask their support channels for verification of the command line that you issue, but in cases where you cannot access the device, it is usually a connection problem.</p> <p>Could you verify that you have connected the SWD lines correctly, and not chosen JTAG (we only support SWD) as the transport?</p> <p></p> <p>Kind regards,</p> <p>Håkon</p><div style="clear:both;"></div>