The pkg command generates a package to use for a Device Firmware Update (DFU). The package contains the new firmware image, an init packet, and a manifest file that indicates the package format. The command can also be used to display the package contents.
Run nrfutil pkg generate to generate a zip file that you can use later with a mobile application or another tool to update the firmware of an nRF5 device. You can see available options by entering the following command:
nrfutil pkg generate --help
Run nrfutil pkg display to display the contents of a package.
nrfutil pkg generate --application app.hex app_dfu_package.zipnrfutil pkg generate --hw-version 51 --sd-req 0x80 --application-version 4 --application app.hex --key-file key.pem app_dfu_package.zipEnter the following command to generate an unsigned debug package without version information from the application file app.hex:
nrfutil pkg generate --debug-mode --application app.hex app_dfu_package.zipnrfutil pkg display app_dfu_package.zipThe --hw-version option must correspond to the nRF5 device used.
The --sd-req option must correspond to the firmware ID of the
SoftDevice present on the target device. Refer to the list of SoftDevice firmware
IDs (under --sd-req) displayed by the nrfutil pkg generate --help
command.
--sd-req option is required for compatibility. Any value
provided for this option is ignored during the DFU. Not all combinations of Bootloader, SoftDevice, and Application are possible when generating a package. See Supported Bootloader, SoftDevice, and Application combinations for more information.