RE: DFU failed - Control Point Characteristic of DFU Target

Renix — Tue, 12 Oct 2021 20:55:56 GMT

Terje,

I believe I pointed to an incorrect directory, so it did not find one of the files.

It is now working

Thanks

RE: DFU failed - Control Point Characteristic of DFU Target

tesc — Fri, 08 Oct 2021 12:51:42 GMT

Hi,

Error code 5, NRF_DFU_RES_CODE_INVALID_OBJECT, means "Data object does not match the firmware and hardware requirements, the signature is wrong, or parsing the command failed." (See nrf_dfu_result_t.)

What this means, is usually that you have not gotten everything right when creating the firmware package.

What command did you use for creating the package?
What SoftDevice, bootloader and applicaiton is running on the device already?
What SoftDevice, bootloader and/or application is part of the update?
What SDK version(s) are we talking about, both for existing SoftDevice/bootloader/application and those of the update?

It can also be that the package is not correctly signed, i.e. that the package is not signed with the private key corresponding to the public key built into the bootloader.

Regards,
Terje