I do run the “nrfjprog --pinreset”,later, the nrfjprog can not find the nrf51 device,WHY?

I do run the “nrfjprog --pinreset”,later, the nrfjprog can not find the nrf51 device,WHY?https://devzone.nordicsemi.com/f/nordic-q-a/11881/i-do-run-the-nrfjprog---pinreset-later-the-nrfjprog-can-not-find-the-nrf51-device-whyI do run the “nrfjprog --pinreset”,later, the nrfjprog can not find the nrf51 device,WHY? the nrfprog version is V5.2.0, I use nrf51822qfaa,s110,keil,etc.en-USTelligent Community 13Mon, 15 Feb 2016 06:51:09 GMTRE: I do run the “nrfjprog --pinreset”,later, the nrfjprog can not find the nrf51 device,WHY?https://devzone.nordicsemi.com/thread/45003?ContentTypeID=1Mon, 15 Feb 2016 06:51:09 GMT137ad170-7792-4731-bb38-c0d22fbe4515:dc9121c3-45c0-4f53-82a1-e356faf9b9eeSusheel Nuguru<p>Not sure, maybe the debugger lost power in middle of doing a pin reset?? I don't know. Did you try "nrfjprog --recover" on command prompt (without the quotes).</p> <p>you can also update your nrfjprog, you are using very old version. Download <a href="https://www.nordicsemi.com/eng/nordic/download_resource/33444/24/78370586">here</a></p><div style="clear:both;"></div>