Only PTI commands on nRF9151 custom board

[_rd]

Hello,

I have a custom board with nRF9151 and nano SIM card. I have flashed at_client sample to the module and trying to test different at commands.

It seems only PTI commands are available such as:

> at+cgmi
Nordic Semiconductor ASA
OK
> at+cgmm
nRF9151-LACA
OK
> at+cgmr
mfw-pti_nrf91x1_2.3.5
OK

> AT%SIMTEST
%SIMTEST: 0
OK

and I receive error for other nRF9151 commands such as:

> at+cfun=0
ERROR

Can you please advise how to resolve this issue?

Thanks

[Hakon]

Hello,

mfw-pti_nrf91x1_2.3.5

No wonder non-PTI commands are not working, you have the PTI mfw flashed on your board.

Here are the supported commands; https://docs.nordicsemi.com/bundle/ref_at_commands_pti/page/REF/at_commands/production_test/production_test_pti.html 

[_rd]

Hello Hakon,

Thanks for the clarification.

I am trying to program mfw_nrf91x1_2.0.2 to the module using:

nrfutil 91 modem-firmware-upgrade --firmware <PATH> --verify --serial-number <SN>

As for the serial number, neither the one on the chip nor what I receive from +CGSN doesn't work.

Can you advise how to get the valid SN?

Thanks

[_rd]

For other beginners like me, SN of Jlink debugger works fine.

Please close this case.