Cannot program nRF51822 againhttps://devzone.nordicsemi.com/f/nordic-q-a/86/cannot-program-nrf51822-againDear Sir, After I remark this //BLE_GAP_CONN_SEC_MODE_SET_OPEN(&amp;cccd_md.write_perm); and program it into nRF51822, then I cannot program it again. PC program report it cannot find the device. I believe nRF51822 keep running cause the Jlink cannot connecten-USTelligent Community 13Tue, 09 Jul 2013 11:38:04 GMTRE: Cannot program nRF51822 againhttps://devzone.nordicsemi.com/thread/473?ContentTypeID=1Tue, 09 Jul 2013 11:38:04 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c5e831dd-1d07-4b50-b7a3-d7c108eb57caH&#229;kon Alseth<p>I&#39;m not sure what happens when you comment out the CCCD permissions, but most likely a reset of the device will wake it up again so that you can program it. Do a hard reset, ie unplug the USB cable. If that does not work, try using the recover option in nRFgo Studio, or nrfjprog: nrfjprog --recover -s </p><div style="clear:both;"></div>