nrfjprog, error while flashing modem

[Arthur M]

Hello,

I am wondering if what I am seeing is expected.
I tried flashing the modem fw on the nrf9151 using nrfjprog.exe (v10.24.2);
which I am able to do successfully, but I see errors in the process (see below).

I am wondering about why do I get this error with the ap-protection?

nrfjprog.exe -f nrf91 --coprocessor CP_MODEM --program mfw_nrf91x1_2.0.2.zip --verify --pinreset

[error] [ Client] - Encountered error -90: Command read_memory_descriptors executed for 14 milliseconds with result -90
[error] [ Worker] - Can't read memory descriptors, ap-protection is enabled.
[ #################### ]   0.000s | Finding image components - Finished
[ #################### ]   0.046s | Upload segments - segment 2 of 2
[ #################### ]  31.519s | Uploading modem image - segment 2 of 2
[ #################### ]   0.000s | Finding image components - Finished
[ #################### ]   0.278s | Verify modem image - Modem ready for verification
[ #################### ]   0.208s | Verify segment 0x00038000-0x00231FFF - Successfully verified
[ #################### ]   0.265s | Verifying modem - Verifying memory range 3 of 3
[ #################### ]   0.250s | Verify segment 0x0027C000-0x0027FFFF - Successfully verified
Applying pin reset.

Thanks,

ArthurM

[dejans]

Hi,

Do you see the same behavior when you omit --coprocessor CP_MODEM?

Best regards,
Dejan

[Arthur M]

Hello Dejan,

I do not see the error pop up when removing the `--coprocessor CP_MODEM` option.

When comparing both logs, I see `update_memory_list` is not called in the same condition when the option is not set, could that be related?
I also see that le "--coprocessor" option mentions "[warning] [  nRF91] - Workaround for nRF91 errata 36" in the log, can that be related?

Note: it's fine for me to remove the --coprocessor option.

Thanks,

ArthurM

[dejans]

Hi Arthur,

Your initial log does not show errata 36 warning.
Can you provide complete log which shows "[warning] [ nRF91] - Workaround for nRF91 errata 36"?

Best regards,
Dejan