https://devzone.nordicsemi.com/f/nordic-q-a/5947/how-to-use-nrfjprog---snrhello! i wonder to download some hex files into device, i plan to use 【nrfjprog --ids】 and 【nrfjprog --snr】. two steps: nrfjprog -i nrfjprog --snr 4294967295 --program test.hex 4294967295 is one of serial numbers from nrfjprogen-USTelligent Community 13Thu, 12 Mar 2015 15:41:47 GMThttps://devzone.nordicsemi.com/thread/20713?ContentTypeID=1Thu, 12 Mar 2015 15:41:47 GMT137ad170-7792-4731-bb38-c0d22fbe4515:825e2950-ea37-452a-a197-75c82734b3fcAsbj&#248;rn<p>I just tested nrfjprog --snr 4294967295 --program test.hex myself and that works fine. You don&#39;t have to select in the dialog window. So the --snr enables you to select. Have you update you nrfTools lately? Could it be that you have an old version nRFjprog running?</p><div style="clear:both;"></div>