Error Flash Download Failed - Cortex M4

[namitha K M]

Hello, 

Hi i am working nrf52840 DK board, from this first i have load softdevice and after that i flash the code so that time it was showing the error as "Error Flash download failed - cortex m4".Anyone please help me on this, how to solve this type of error.

[namitha K M]

Thanks for replying

I tried that one also but it was showing same error only. If I try with NRF17 means its working fine, but in NRF15 it was showing the error as "Flash download failed - Cortex M4".

Actually what is the problem in the sense, If I load the softdevice and then I flash the code means it will showing the error. This is the problem occurring in my project. kindly please help on this.

[Jared]

Hi,

namitha K M said:

I tried that one also but it was showing same error only.

What error was it showing from when you tried to program via nrfjprog? Can you add the log parameter and upload the log?

nrfjprog --program blinky_pca10056.hex --chiperase --verify --log

namitha K M said:

If I try with NRF17 means its working fine, but in NRF15 it was showing the error as "Flash download failed - Cortex M4".

Which version of SDK 15? v15.3, v15.2 or v15.0? Can you show a screenshot of the terminal in µvision showing the error?

regards

Jared