https://devzone.nordicsemi.com/f/nordic-q-a/19541/bootloader-settings-pageWhat happens when the bootloader settings page is not programmed with the bootloader to the device? This page is automatically created and all the versions set to 0? Or the dfu skips version verification?en-USTelligent Community 13Wed, 08 Feb 2017 10:01:35 GMThttps://devzone.nordicsemi.com/thread/75954?ContentTypeID=1Wed, 08 Feb 2017 10:01:35 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1b9d97a5-c932-4fe8-8949-71b77c28649cbjorn-spockeli<p>On startup the bootloader will call <code>nrf_dfu_settings_init()</code>( in <code>nrf_dfu_init()</code> in nrf_dfu.c), which checks the CRC of the bootloader settings page. If the page is not present(i.e. it is set to all 0xFFs), then the page is reset to 0s and the settings version is set to <code>NRF_DFU_SETTINGS_VERSION=1</code>(defined in preprocessor symbols).</p> <p>The device will then stay in bootloader mode, waiting for an application update, which will set the dfu settings page to the values corresponding to the image that has been received, e.g. application CRC , application version etc ... .</p> <p>Best regards</p> <p>Bjørn</p><div style="clear:both;"></div>