https://devzone.nordicsemi.com/f/nordic-q-a/36382/flashed-board-not-respondingI have a board populated with the nRF51822 and associated components for the application. I am able to flash the device successfully and successfully verify the flash. The current program is set to simply turn on one LED, but it is not working. en-USTelligent Community 13Mon, 16 Jul 2018 13:06:00 GMThttps://devzone.nordicsemi.com/thread/140209?ContentTypeID=1Mon, 16 Jul 2018 13:06:00 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f9e7c815-f0b0-43ae-87fe-df51faac7289Stian R&#248;ed Hafskjold<p>Just adding that when you flash, or verify the firmware, the chip goes into debug mode which means that it starts the HF clock and the internal LDO regulator, CPU, etc. automatically. So this is not a good indication that the hardware is setup correctly.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/140208?ContentTypeID=1Mon, 16 Jul 2018 13:02:30 GMT137ad170-7792-4731-bb38-c0d22fbe4515:54324084-0757-406a-a2b2-3a54590027a8Stian R&#248;ed Hafskjold<p>The flash validation only verifies that the program is flashed to the chip, and that data is not corrupted. It does not validate any hardware configuration or confirm that the chip will boot at all.</p> <p>There can be many reasons why the LED does not turn on.</p><div style="clear:both;"></div>