DFU with bin file only

[kevin seo]

Hello,

I can create a zip file with nrfutil pkg generate and there is a bin file in it? I want to make DFU as a bin file only.

I only want to download the firmware as a bin file.

Is it possible?????

If it is possible, how can I download firmware only to a bin file?

And How to flow??????

[Simonr]

Hi

No, this won't be possible. The DFU .bin file is signed, so without the other contents of the .zip file, it will be useless (unreadable). You'll need the full .zip file to do a DFU.

Best regards,

Simon

[kevin seo]

If i will fix the DFU Firmware, is it impossible??

[Simonr]

Hi

Is there any particular reason you need the DFU to be only a .bin file? Is what you actually want to avoid the signing of the DFU process? I think this DFU example does it without signing, but the .dat file is still present, as you won't be able to do DFU with only a .bin file.

Best regards,

Simon

[kevin seo]

What does the dat file and json file contain?

[Simonr]

Hi

The .dat file of a DFU contains the init packet. It contains information like firmware version, a hash of the image, signature, SoftDevice dependencies, etc.

The .JSON file is a configuration file used in DFU over TFTP and contains DEV_TYPE and DEV_ID for each firmware type, paths to init files, and paths to firmware images.

Best regards,

Simon