https://devzone.nordicsemi.com/f/nordic-q-a/48214/update-application-from-uart-dfuHi, I am using nRF51822 on my custom board with SDK 12.2.0. I use DFU bootloader, and can update application in BLE from DFU mode with bootloader (dual bank mode is used). It works fine. Now, I want to update my application from my current applicationen-USTelligent Community 13Wed, 20 Nov 2019 12:06:12 GMThttps://devzone.nordicsemi.com/thread/221053?ContentTypeID=1Wed, 20 Nov 2019 12:06:12 GMT137ad170-7792-4731-bb38-c0d22fbe4515:47e12776-b5df-4efe-a2fb-4c45f9443c86Vidar Berg<p>I think it should work if you update the bootloader settings page (<a href="https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v12.3.0/structnrf__dfu__settings__t.html">nrf_dfu_settings_t</a>) after the image is successfully stored to bank 1, then call nvic_systemreset to reboot the device and let the bootloader activate the new app.&nbsp;</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/220890?ContentTypeID=1Tue, 19 Nov 2019 14:34:26 GMT137ad170-7792-4731-bb38-c0d22fbe4515:27fd129e-97a8-4c28-aa46-1e81ab50cd89Xav<p>After writing new firmware in bank1 region, how is it possible to inform the bootloader to write new firmware in bank0 region ?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/191383?ContentTypeID=1Thu, 06 Jun 2019 13:12:46 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7ff55d5b-30a0-4843-8c50-cb39de2c7c7eVidar Berg<p>Hi Xavier,</p> <p>Unfortunately, we don&#39;t have an example for DFU over UART in SDK 12.x.x. You can&nbsp;try to backport UART transport from the <a href="https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v14.2.0/sdk_app_serial_dfu_bootloader.html?cp=5_5_2_4_4_2">serial bootloader in SDK 14.2.0</a>. It should be doable without too much work, but I haven&#39;t tried myself.&nbsp;&nbsp;</p> <p>Regards,</p> <p>Vidar</p><div style="clear:both;"></div>