In place FOTA through BLE with nrf Connect SDK and Zephyr.https://devzone.nordicsemi.com/f/nordic-q-a/117454/in-place-fota-through-ble-with-nrf-connect-sdk-and-zephyrHi, I am developing BLE beacon application on the nrf52820 soc which has limited Flash resources. I want to have the FOTA through BLE abilities built in to enable firmware updates in the future. Internally we found some conflicting information on theen-USTelligent Community 13Fri, 20 Dec 2024 10:56:39 GMTRE: In place FOTA through BLE with nrf Connect SDK and Zephyr.https://devzone.nordicsemi.com/thread/515893?ContentTypeID=1Fri, 20 Dec 2024 10:56:39 GMT137ad170-7792-4731-bb38-c0d22fbe4515:bd7bbe8d-0489-4149-bdee-bc1ec02513aftesc<p>Hi,</p> <p>Single slot DFU is only available for serial DFU, and not for BLE OTA DFU. The reason for this, is that serial capabilities (such as UART or USB) are relatively light weight, and can be part of the bootloader. BLE on the other hand is a much larger stack, and so for BLE OTA DFU you do need the application for downloading the new firmware. Therefore, you do need two slots for BLE OTA DFU. You can however have the second slot in external Flash, if the on-chip Flash for the nRF device is not sufficient for your application needs.</p> <p>Regards,<br />Terje</p><div style="clear:both;"></div>