I can't program external board with nRF5340 2.0.2

[elektron314]

I can't program external board with nRF5340 2.0.2.

2.0.0 has no problems

Connection is the same, through Debug out P19.

I can program onboard nRF chip, that is located on the devkit itself but the external board - no chance.

[error] [ Client] - stderr: [*** LOG ERROR #0001 ***] [2023-10-16 15:31:01] [nRF53] {argument not found}
Failed to enable coprocessor with unknown error.
[error] [SeggerBackend] - Encountered unexpected debug port ID 4, expected 6
ERROR: Access to the selected address is blocked by the SPU.
NOTE: For additional output, try running again with logging enabled (--log).
NOTE: Any generated log error messages will be displayed.
FATAL ERROR: command exited with status 37: nrfjprog --recover -f NRF53 --coprocessor CP_NETWORK --snr 1050037318

[elektron314]

Update: it doesn't detect Vdd of my target board and stays on the level of 3V.

My board is 1.8V and I want to mention again that the connection is the same. I use P19 with 6-pin tag connect cable.

[elektron314]

Got it

SB19 should be shorted.

Shame on your documentation Nordic Semi that there is no any information about SB19 in the DK user guide!

Thank you for wasting my time.

[Jared]

Hi,

When DK is powered through USB it will be at 3V0. The DUT must match the DK voltage, and when the DK is powered through USB it will be at 3V0. If the DUT is not at 3V0, then you have to as you've already done short SB19 to set VREF to correct voltage:

I've made a request to our technical publication team to add documentation for this solder bridge, I'm sorry for the inconvenience,

regards

Jared