https://devzone.nordicsemi.com/f/nordic-q-a/963/why-hard-power-reset-is-needed-after-every-flash-into-nrf51822Hi, we have nrf51822 custom hardware. we are flashing application through j-link. but after every flashing , i need to do switch off and on the device. then only i am getting advertisement. Here my code size is 27KB. But actually myen-USTelligent Community 13Mon, 25 Nov 2013 15:13:21 GMThttps://devzone.nordicsemi.com/thread/4594?ContentTypeID=1Mon, 25 Nov 2013 15:13:21 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9bc8d95e-2caa-46da-af3b-ff5de8356f5cOle Morten<p>I&#39;d recommend you to verify that &quot;Reset and run&quot; is checked in the Keil project settings, as shown in the attached screenshot. If not, the device will not be reset after downloading a new application, and instead just hang somewhere.</p> <p>However, keep in mind that when not power-toggling after a download, the debug interface will stay enabled, giving quite high current consumption. Take a look at <a href="https://devzone.nordicsemi.com/index.php/why-does-my-nrf51822-consume-1-ma-in-sleep">this question</a> for details.</p> <p><img src="https://devzone.nordicsemi.com/cfs-file/__key/communityserver-discussions-components-files/4/nrf51_2D00_reset_2D00_and_2D00_run.png" alt="nrf51-reset-and-run.png" /></p><div style="clear:both;"></div>