Hello,
I develop entirely on Linux and I am unable to find the --sd-req / --sd-id required for generating a dfu package zip using nrfutil. I am using developing for the nRF52840 using s140_nrf52840_5.0.0-2.alpha_softdevice.hex.
I have seen others mentioned that you can use nRFgo Studio to find this value, but this is not an option for me.
Using urfutil pkg generate --help does not provide any s140 versions.
Thanks!
Hi,
The number you are looking for is what the SoftDevice calls "firmware_id" which is located in the 15th and 16th byte of the SoftDevice information structure:
To get this number you can use any software capable of reading out the flash of the device. Flash the SoftDevice to a nRF52840 and read out the value at address 0x300C by using any software you prefer. I recommend using "nrfjprog" which is part of "nrf command line tools" as shown in this screenshot:
For completeness, here is how you find the number in nRF Go Studio if it's of interest:
Best regards,
Rune Holmgren
