https://devzone.nordicsemi.com/f/nordic-q-a/29484/how-to-install-nrfjprogHi, I followed the NRF51 Guide and downloaded the file linked, and it installed the J- Link Commander, once opened it gives a prompt J-Link&gt; and when I enter in -e command to erase my nrf52832 chip, it does not work. My goal is to erase my chip due toen-USTelligent Community 13Tue, 16 Jan 2018 10:59:10 GMThttps://devzone.nordicsemi.com/thread/117208?ContentTypeID=1Tue, 16 Jan 2018 10:59:10 GMT137ad170-7792-4731-bb38-c0d22fbe4515:734d5b80-220c-4cb1-876c-dce8c8afb144shibshab<p>You should use <a href="http://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.tools%2Fdita%2Ftools%2Fnrf5x_command_line_tools%2Fnrf5x_installation.html">nRF5x Command Line Tools</a>. This works as a wrapper layer on top of the J-Link interface, and is more suited for your use case.</p> <p>The command for erasing your chip would be (as you say): <code>nrfjprog -e -f NRF52</code></p><div style="clear:both;"></div>