https://devzone.nordicsemi.com/f/nordic-q-a/36457/failure-to-start-the-device-after-programming-the-device-with-nrfjprog----commandsWe are using the nrf51822 chip, however after typing the command: nrfjprog --memrd 0x10001080 -f NRF51, the chip is no longer able to start. We have tried resetting the chip using nrfjprog --recover, nrfjprog -e, and nrfjprog eraseuicr but still theen-USTelligent Community 13Tue, 17 Jul 2018 16:51:17 GMThttps://devzone.nordicsemi.com/thread/140445?ContentTypeID=1Tue, 17 Jul 2018 16:51:17 GMT137ad170-7792-4731-bb38-c0d22fbe4515:83eb9bf8-8639-4c31-93b1-ef784e15c1cfEdvin<p>When you program the chip with nrf51422_xxac_s130.hex, is that the same firmware that was on the chip when the firmware was running? Does the firmware use the UICR registers? Are you able to debug your project in an IDE?</p> <p>&nbsp;</p> <p>Best regards,</p> <p>Edvin</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/140162?ContentTypeID=1Mon, 16 Jul 2018 07:51:49 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0811c406-6222-4ade-9a12-b3b99b26c649Tommy Buntez<p>I tried running these commads, but the problem is still there...</p> <p>Erase all, program SoftDevice and verify:</p> <div class="content-scrollable-wrapper"> <pre><code>nrfjprog.exe --family NRF51 --program s130_softdevice.hex --chiperase --verify </code></pre> </div> <p>Program application and verify (use<span>&nbsp;</span><code>--sectorerase</code><span>&nbsp;</span>in addition to erase old application before programming):</p> <div class="content-scrollable-wrapper"> <pre><code>nrfjprog.exe --family NRF51 --program nrf51422_xxac_s130.hex --verify </code></pre> </div> <p>Apply reset in order to start the application.</p> <div class="content-scrollable-wrapper"> <pre><code>nrfjprog.exe --family NRF51 --reset</code></pre> </div><div style="clear:both;"></div>