https://devzone.nordicsemi.com/f/nordic-q-a/16562/disable-softdevice-protection-in-command-lineHi guys, I can erase all the chip and load the softDevice in command line successfully by nrfjprog.exe. Is there any switch to disable the softdevice protection? Or I need to write directly to the memory location? Do you have any instruction for thaten-USTelligent Community 13Tue, 20 Sep 2016 19:30:22 GMThttps://devzone.nordicsemi.com/thread/63355?ContentTypeID=1Tue, 20 Sep 2016 19:30:22 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9f386d06-c583-4e4b-9a19-2ef572ecb2c9Ehsan<p>Hi Christopher,</p> <p>I need to &quot;disable the softdevice protection&quot; not &quot;disable the readback protection&quot;. They are not the same thing, are they?</p> <p>It is important when you want to update softdevice with DFU mechanism to &quot;disable the softdevice protection&quot;.</p> <p>Thanks,</p> <p>Ehsan</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/63354?ContentTypeID=1Tue, 20 Sep 2016 19:06:01 GMT137ad170-7792-4731-bb38-c0d22fbe4515:48bc2aa8-054b-4dd4-af32-a5acc0077c51Christopher<p>Have a look at the available <code>nrfjprog</code> commands <a href="http://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.tools%2Fdita%2Ftools%2Fnrf5x_command_line_tools%2Fnrf5x_nrfjprogexe_reference.html">on this page</a>. To disable the readback protection, you must use the <code>--recover</code> command (erases all user flash memory and disables the readback protection mechanism if enabled).</p> <p>You will find <a href="https://devzone.nordicsemi.com/question/56374/how-to-program-softdevice-and-firmware-with-new-nrfjprog/?answer=56410#post-id-56410">on this post</a> an example on how to program a SoftDevice and application on the nRF51 and then enable the readback protection.</p><div style="clear:both;"></div>