https://devzone.nordicsemi.com/f/nordic-q-a/38302/can-t-shutdown-nrf-52832-even-with-power-management-library-sysoff-handler-0x00020e79-blockingHello, I&#39;m trying to shutdown my whole system (nRF 52832, SD132, SDK 12.3) after advertisement fast and slow are finished, following the structure of the peripheral BLE_APP_UART example: when the event BLE_ADV_EVT_IDLE is produced, the sleep_mode_enteren-USTelligent Community 13Tue, 11 Sep 2018 14:04:02 GMThttps://devzone.nordicsemi.com/thread/148227?ContentTypeID=1Tue, 11 Sep 2018 14:04:02 GMT137ad170-7792-4731-bb38-c0d22fbe4515:32023860-5142-4c93-a8dd-be6d8ab2164dBruno Santamaria<p>Thank you very much. This actually solved the problem, there was no software issue.</p> <p>I have to say I haven&#39;t found this indication about debug-mode and system-off anywhere in the documentation...</p> <p>I tried to remove the de-initialization and the Power Management Library but didn&#39;t work, so this was indeed necessary to shut the system down.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/148077?ContentTypeID=1Mon, 10 Sep 2018 15:09:55 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4bda2b84-d462-4775-8b90-9819eca91a0bKenneth<p>The main problem here seems to be the following statement &quot;<span>sd_power_system_off() returns&nbsp;NRF_ERROR_NOT_SUPPORTED</span>&quot;. This may occur if the chip is in debug mode (for instance after programming). To achieve system OFF you need to power cycle the board after programming, then the&nbsp;<span>sd_power_system_off() will work as intended.</span></p> <p><span>Best regards,<br />Kenneth</span></p><div style="clear:both;"></div>