The protocol for Secure DFU Bootloader over Serial UART Link

[oplinux]

Dear friends,

    I used a serial bootloader by this tutorial  Secure DFU Bootloader over Serial Link (UART) , i can upgrade my application with the pc nrfutil tool, the nrfutil based on python language, i can't found any infomation about the serial DFU process in the official site infocenter.nordicsemi.com. I only know the dfu commands used in nrfutil

    I want to get the serial DFU protocol which is communicated between 52840 bootloader and nrfutil, it's better if u can offer some illustrations about this serail DFU process.

   Thank you in advance.

   By the way my ble SDK is nRF5 SDK v17.0.2.

[Charlie]

Hi Oplinux,

I think the Secure DFU Bootloader over Serial Link (UART/USB) example is what you are looking for. You need to read its source in order to get more detail. It follows the general Device Firmware Update process.

Best regards,

Charlie