RE: nrfutil: not possible to standalone validate nRF91 modem firmware

dejans — Tue, 11 Nov 2025 10:51:15 GMT

Hi,

Can you try using 'nrfutil device fw-verify'?

Best regards,
Dejan

RE: nrfutil: not possible to standalone validate nRF91 modem firmware

JordanYates — Mon, 10 Nov 2025 22:17:11 GMT

Hi Dejan,

No it is not suitable.

> `nrfutil`, the `--firmware` argument is required, and providing `--firmware` always results in the firmware being re-flashed.

I already mentioned that command in the original question stating that it doesn't work.

It is also trivial to check on your side that it doesn't work. Run the command twice, and see that the second run still sits there for 30 seconds programming the modem core a second time...

(.zephyr_venv) jordan:~/code/workspace$ nrfutil 91 modem-firmware-upgrade --firmware ~/mfw_nrf91x1_2.0.3.zip --verify --serial-number 820101337
[00:00:30] ###### 100% [000820101337] Upgraded modem firmware on 000820101337
(.zephyr_venv) jordan:~/code/workspace$ nrfutil 91 modem-firmware-upgrade --firmware ~/mfw_nrf91x1_2.0.3.zip --verify --serial-number 820101337
[00:00:30] ###### 100% [000820101337] Upgraded modem firmware on 000820101337

RE: nrfutil: not possible to standalone validate nRF91 modem firmware

dejans — Mon, 10 Nov 2025 14:15:27 GMT

Hi,

Is the command shown below suitable?

nrfutil 91 modem-firmware-upgrade --firmware mfw_nrf91x1_2.0.3.zip --verify --serial-number <your_board_serial_number>

Best regards,
Dejan