How to generate init file(*Dat) for secure DFU OTA update?

[Nilesh Bhavsar]

Hi;

I am trying to secure DFU OTA. For that, i am using SDK12.2.0 and done with example file.

Now how to generate this .dat file itself.

Also explain each parameter of init file and how to set it.

[bjorn-spockeli]

Hi Nilesh,

you can generate firmware images for the Secure Bootloader using our nrfutil tool, which is available here on GitHub.

Install instructions and examples on how to generate the firmware images are given in the READM.md file.

Best regards

Bjørn

[Hung Bui]

You can use KEIL to flash the bootloader, just make sure nrfjprog was used in Keil for programming.

If you want to flash the application without doing OTA DFU, you can flash it directly with Keil, but since the bootloader will check a bootloader setting to know if there is a valid application is available. We need to overwrite the bootloader setting. Please have a look at section E in this FAQ.