52DK Download failed with VS code

It didn't fail. It says "flashed successfully". This is only a warning.

But the board is not running even power reset after download is completed.

Then i'm tried to copy the zephyr.hex to another directory and download by iar,it works fine.

I'm tried to download again by nrfjprog command,

The command is:nrfjprog --program zephyr.hex --verify --log

See the information as below

But the board is not running even power reset after download is completed.

Then i'm tried to copy the zephyr.hex to another directory and download by iar,it works fine.

I'm tried to download again by nrfjprog command,

The command is:nrfjprog --program zephyr.hex --verify --log

See the information as below

Hi,

The target area needs to be erased. If not, --program will fail. You can erase the chip before programming, but the simplest option is to erase the chip as a part of the programming operation:

nrfjprog -f nrf52 --program zephyr.hex --chiperase --verify

You can also add --reset to the command above to make the device reset after flashing.

Best regards,

Marte