Identifying modem version with J-Link (and pynrfjprog)

[Matthew Storkey]

Do you know of any way of reading the installed modem version of an un-locked nrf9160 through the j-link programmer. I would like to conditionally program the modem firmware based on whether it is up to date.

I know it can be read in the application code, but this approach does not work for my use case.

Matthew

[dejans]

Hi Matthew,

It is not possible to read out the modem version using nrfjprog, but you can verify the image that is on the device with --verify option of nrfjprog. This is usually done to verify that the modem firmware that is written is the same as the one you use for verification. You can also use "nrfjprog --verify mfw_version.zip" to verify the zip file that you have. There is also the option of reading the modem key digest.

Best regards,
Dejan