I am trying to update an nRF52 through the DFU protocol from an esb firmware without softdevice to a bluetooth firmware with softdevice included.
I am updating the device through a UART interface, using a custom implementation of the DFU protocol complying with DFU protocol (in which PRN is set to 0). I have tested my implementation with softdevice-less esb to softdevice-less esb updates and they work fine.
To create the update package, I run nrfutil v8.0.0, with the following command:
nrfutil pkg generate
--key-file mycert.pem
--hw-version 52
--softdevice sd.hex
--sd-req 0x00,0x0100
--sd-id 0x0100
--application-version-string APP_VERSION
--application app.hex
update.zip
After sending the softdevice .dat file in the "init packet" phase I receive an extended error (0x0B) with a payload of 0x07, which, according to nordic documentation is a SD version error. This happens in response to the execute request (0x04). If I immediately send another execute after the failure I get an error 0x05
If I run nrfutil pkg display on the genarated zip I get the following output:
DFU Package: <update.zip>:
|
|- Image count: 2
|
|- Image #0:
|- Type: softdevice
|- Image file: s140_nrf52_7.2.0_softdevice.bin
|- Init packet file: s140_nrf52_7.2.0_softdevice.dat
|
|- op_code: INIT
|- signature_type: ECDSA_P256_SHA256
|- signature (little-endian): b'SIGNATURE'
|
|- fw_version: 0xFFFFFFFF (4294967295)
|- hw_version 0x00000034 (52)
|- sd_req: 0x00, 0x100
|- type: SOFTDEVICE
|- sd_size: 153140
|- bl_size: 0
|- app_size: 0
|
|- hash_type: SHA256
|- hash (little-endian): b'HASH'
|
|- boot_validation_type: ['VALIDATE_GENERATED_CRC']
|- boot_validation_signature (little-endian): [b'']
|
|- is_debug: False
|
|- Image #1:
|- Type: application
|- Image file: radio_ble.bin
|- Init packet file: radio_ble.dat
|
|- op_code: INIT
|- signature_type: ECDSA_P256_SHA256
|- signature (little-endian): b'SIGNATURE'
|
|- fw_version: 0x00000322 (802)
|- hw_version 0x00000034 (52)
|- sd_req: 0x100
|- type: APPLICATION
|- sd_size: 0
|- bl_size: 0
|- app_size: 80356
|
|- hash_type: SHA256
|- hash (little-endian): b'HASH'
|
|- boot_validation_type: ['VALIDATE_GENERATED_CRC']
|- boot_validation_signature (little-endian): [b'']
|
|- is_debug: False
I have tried setting both NRF_DFU_SINGLE_BANK_APP_UPDATES=0 and NRF_DFU_SINGLE_BANK_APP_UPDATES=1, and I have NRF_DFU_APP_DOWNGRADE_PREVENTION=0
