https://devzone.nordicsemi.com/f/nordic-q-a/71951/firmware-update-of-ble-via-lteHi Community! I&#39;m working on product development for a client/customer. The product will be a small embedded system with an LTE chip (nRF9160) and a BLE chip (nrf52840). (We are using the nrf9160 DK for development.) When the product is ready and hitsen-USTelligent Community 13Thu, 25 Feb 2021 07:15:12 GMThttps://devzone.nordicsemi.com/thread/296144?ContentTypeID=1Thu, 25 Feb 2021 07:15:12 GMT137ad170-7792-4731-bb38-c0d22fbe4515:48bcecd1-91a6-421f-9ece-fec666e54524&#216;yvind<p>Hello,&nbsp;<br /><br /></p> [quote user=""]I believe that what we are trying to implement in our product is not a unique use case. There must be a way to develop it! If you know how others solved it, please make me smarter![/quote] <p>&nbsp;You are completely right, but unfortunately this is not a solution that we&nbsp;have at the moment. And of course there have been some questions about similar solutions, <a href="https://devzone.nordicsemi.com/f/nordic-q-a/58932/difference-between-the-libraries-of-littlefs-and-nvs/239679#239679">have a look at my colleague Simon&#39;s answer regarding updating nRF52 over UART from nRF91</a>&nbsp;and <a href="https://devzone.nordicsemi.com/nordic/nrf-connect-sdk-guides/b/software/posts/device-firmware-update-dfu-with-mcuboot-bootloader">this blog post from November 2020</a>.<br /><br />Basically the nR9160 needs to have some sort or DFU controller, which is currently not officially supported. I will inquire internally if anyone has tried.<br /><br />Will you be using nRF5 SDK or NCS to build an image for the nRF52? Have you looked at the <a href="https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/mcuboot/wrapper.html">MCUBoot documentation</a>?<br /><br />Kind regards,<br />Øyvind</p><div style="clear:both;"></div>