Hash validation failure when DFU package transferred manually. nrf_dfu_validation: Hash verification failed.

[Coralie]

Hello I'm trying to update an NRF52810 over a STM32 via an UART, I've the following error "nrf_dfu_validation: Hash verification failed." at the end of the process when sending the execute command.

Seems to be the same problem than case "Case ID: 231115" but the ticket went private so I couldn't see the final solution. 

I also notice that the data written in flash on the nordic microcontroller is filled with 0xFF in order to be a 256 byte block. So the firmware I'm sending is not written correctly which could explain the hash problem, but why are these 0xFF added ?

Best regards, 

Coralie

[Coralie]

Hi Arnold, 
I didn't face this problem. You should open a new ticket in order to have more help. 
Are you sure that init packet is signed ?

Regards,

Coralie

[Hung Bui]

arnold park.jr : Please create a new ticket for your issue. 

[arnold park.jr]

thx for fast reply
i solved my problem. sending wrong data was a problem. my mistake 
have a good day