nRF52810 flashing problem: NOT_AVAILABLE_BECAUSE_PROTECTION (ffffffa6)

[tmllr]

Hi,

I'm trying to program a custom board with a nRF52810 via nRF Connect. I keep getting the following error messages:

Error when getting device info: Error: Error: Error occured when get device info. Errorcode: CouldNotCallFunction (0x9) Lowlevel error: NOT_AVAILABLE_BECAUSE_PROTECTION (ffffffa6)
20:06:57.641	Could not fetch memory size of target devkit: Cannot read property 'family' of undefined

I followed this post and tried the following commands:

$ nrfjprog.exe --coprocessor CP_APPLICATION --memrd 0x00FF8000
ERROR: The operation attempted is unavailable due to readback protection in
ERROR: your device. Please use --recover to unlock the device.

$ nrfjprog.exe --coprocessor CP_APPLICATION --recover
Recovering device. This operation might take 30s.
ERROR: Recover failed. Please make sure that the correct device family is given
ERROR: and try again.

I'm using a Segger j-link debugger with a 6-pin-needle adapter to connect the board with my PC via SWD.

Any advice on how to solve this problem is very much appreciated!

[vham]

Have you tried specifying the family with  "-f NRF52"?

The help output of nrfjprog says:

-f  --family <family>       Selects the device family for the operation. Valid
                             argument options are NRF51, NRF52, NRF53, NRF91,
                             and UNKNOWN.
                             If UNKNOWN family is given, an automatic family
                             detection of the device is performed. Note that
                             providing the actual family is faster than
                             performing the automatic family detection. If
                             --family option is not given, the default is taken
                             from nrfjprog.ini. Must be combined with another
                             command.

[tmllr]

Hi,

Thanks a lot for the tip! However, it didn't do anything. The output for both commands is still the same.

Any idea what else could be the problem?

[vham]

Can you check if your custom board is powered externally first? I think the 6 pin needle adapter will not power it.

Make sure you power the custom board first and then connect the Segger j-link.

[tmllr]

Yes, the board is powered externally. Without the external supply, I get this error:

Could not fetch memory size of target devkit: Error: Error occured when get library info. Errorcode: CouldNotOpenDevice (0x4) Lowlevel error: LOW_VOLTAGE (fffffff4)

[vham]

How about this

[tmllr]

nRF Studio is no longer available. How could I erase the target with nRF Connect?

The device options on the right are all disabled unless I'm connected to the target.

[vham]

Ok, in nRF connect, you need to have the jlink connected and then the debugger connected to your custom board.

On the top of the nRF connect window you'll be able to select the j-link, I think it will show the serial number or a bunch of numbers. After the debugger is selected, the options should be available. 

[tmllr]

This doesn't really work. When selecting the j-link debugger at the top, it tries to connect to the board but fails to do so. Thus the device control stays grey.