https://devzone.nordicsemi.com/f/nordic-q-a/23968/application-is-not-started-after-hard-reset-pca10040-s132Hi, I am using pca10040 board with s132 softdevice. I have integrated BLE_APP_UART service with BLE_APP_MULTIROLE_LESC example. The device will start advertising when command is sent through hardware UART. I am getting &quot;APP_ERROR: ERROR_FATAL&quot; whileen-USTelligent Community 13Wed, 02 Aug 2017 13:02:04 GMThttps://devzone.nordicsemi.com/thread/94359?ContentTypeID=1Wed, 02 Aug 2017 13:02:04 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b7912574-19a9-40a4-9ac2-0a002881c83aHung Bui<p>Can you debug ? Please try to step into the code and see what&#39;s wrong. You can also use UART log to check how the program doing. You can have a look here to know more about <a href="https://devzone.nordicsemi.com/question/60125/my-device-is-freezing-and-restarting/#60126">debugging</a>.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/94358?ContentTypeID=1Wed, 02 Aug 2017 07:08:49 GMT137ad170-7792-4731-bb38-c0d22fbe4515:33c6847c-0efe-4104-9162-50d236e72190Pavithra Ravi<p>Hi,</p> <p>Additional observation to the above issue, We are doing power on reset i.e. switching of the entire power to the device and then powered on, then sent command to advertise via uart. Device was not advertising. After that, we pressed reset button and sent the command for advertising, device started advertising. After every poweron reset, is it mandatory to press reset button? I am confused with the observation as both do hard reset the chip.</p><div style="clear:both;"></div>