How to DFU(nRF Connect Android) the Bootloader only?

[role_2099]

Hi nordic,

I want dfu the BL only, how should I pack file? Can show me how to pack instructions of nRF Util, only update bootloader.

Thanks and best regards!

John

[tesc]

Hi,

Please see Creating a firmware package with nrfutil, as well as the help text provided from nrfutil pkg generate --help.

To generate a package for a bootloader, where the hex file of the bootloader is named bootloader.hex, the bootloader version is 1, the bootloader requires the SoftDevice with ID 0xFF, and the signing key is key.pem, use: nrfutil pkg generate --bootloader bootloader.hex --bootloader-version 1 --sd-req 0xFF --key-file key.pem.

If you have any difficulties or see any issues, please describe what you do, what you think should happen, and what happens instead.

Regards,
Terje

[role_2099]

Hi Terje,

Thanks for your reply, It has been solved with your help.

Thanks and best regards!

John