Program Download failed on NRF5340 DK

[Mr.NCK]

HI 

I have got a new nrf5340 DK. I have tested four LEDs and HRM. It's working fine. But when I have tried to upload blinky or hello_world Sample from NCS v1.5.1, I can't able to flash the device. I have seen the Download failed error. I have attached the image of the error which I have got. 

I need help to resolve this.

Thanks & Regards

Navin 

[Elfving]

There doesn't seem to be anything wrong with the flash contents, and it is most likely not HW related. 

Once again, the first of these two lines below return an error right? And the second does not?

nrfjprog -f NRF53 --recover --coprocessor CP_NETWORK

nrfjprog -f NRF53 --recover 

I see that you've managed to flash the button example using your flashcontents.hex, did you do that using SES or the nRF Connect Programmer?

Best regards,

Håkon

[Mr.NCK]

Hi elfving,

Elfving said:

did you do that using SES or the nRF Connect Programmer?

By using the command line. I have done this. Actually, I can easily flash the board by using the command "west build --erase". But while using ses only the  problem occurs,

In that also connect j-link  ----> erase -------> download elf file is not working. without erasing it's working fine

erase the device is needed one right?

Thanks & Regards

Navin