Incorrect manifest file in DFU .zip

[grzegorz]

I try to create ZIP file for DFU:

nrfutil pkg generate --hw-version 52 --application-version 1 --application nrf52832_xxaa.hex --sd-req 0xA8 --key-file private.key app_dfu_package.zip

I get the message:

Zip created at app_dfu_package.zip

So there is no error reported. But I can't use the created file. After selecting the file nRF Connect shows chart screen with "Intializing" status for half a second. The it disappears without any message. I'm again at characteristics view. For me it's a bug in nRF Connect because it doesn't say why it rejects the ZIP. I suppose it's because of incorrect manifest file:

{
    "manifest": {
        "application": {
            "bin_file": "nrf52832_xxaa.bin",
            "dat_file": "nrf52832_xxaa.dat"
        }
    }
}

It looks incomplete. There is no init_packet_data section. Why? I provided all necessary information in command line.

[grzegorz]

It seems everything is OK. The nrfutil pkg display command shows that all the information are in the dat file:

DFU Package: <app_dfu_package.zip>:
|
|- Image count: 1
|
|- Image #0:
   |- Type: application
   |- Image file: nrf52832_xxaa.bin
   |- Init packet file: nrf52832_xxaa.dat
      |
      |- op_code: INIT
      |- signature_type: ECDSA_P256_SHA256
      |- signature (little-endian): 76f195554cc1e61b3674befc7edd3d50db2a599d93929bcb06b73260a3d9cb496b53b3493381fd7957bf7823250685c07a9fbb5220b1cb1447b8c7f0732ee063
      |
      |- fw_version: 0x00000001 (1)
      |- hw_version 0x00000034 (52)
      |- sd_req: 0xA8
      |- type: APPLICATION
      |- sd_size: 0
      |- bl_size: 0
      |- app_size: 42144
      |
      |- hash_type: SHA256
      |- hash (little-endian): 80b29beaad73e443c98056236e14dfc9d837fd2cdfd794f0feaed8dcd67567c1
      |
      |- is_debug: False

So probably manifest format has changed and I was using some old tutorials which described longer manifests.

As for the nRF Connect issue it's a known bug with selecting ZIP file on some Android phones which treat ZIP as a folder. Now I use ES File Explorer and nRF Connect and correctly select ZIP package.