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.

[Nilesh Bhavsar]

Thank you for your quick response.

I am using nRF Connect with android version 4.4.2.

[bjorn-spockeli]

Ok, can you attach the bootloader hex, application hex and the zip package that you created to the question `?

[Nilesh Bhavsar]

No, First i burn softdevice and bootloader hex using nRfgo studio then generate the zip package using above steps for update the application.

[bjorn-spockeli]

If you do not want to upload the hex files or the image you created then I suggest that you try to create a debug package, i.e.

nrfutil pkg generate --debug-mode --application dfu_test_app_hrm_s130.hex --key-file key.private app_dfu_package.zip"

[Nilesh Bhavsar]

Hi,

Thank you for your reply.

But this command is also not working for me.

Also, I analysed that the example zip file size is 30,816 bytes and my zip file size is 30,870 bytes.

So, i hope it's doesn't matter.