RE: Program and secure in one step

Hung Bui — Mon, 14 Oct 2024 11:54:44 GMT

Hi Simon,
You can do it in one go by preparing your hex file with the address 0x10001208 already written.

What you can do is to flash with 2 steps as above. But don't reset the chip, so that you still have access to the chip. Then save the UICR to a file by using:
nrfjprog --readuicr uicr.hex

You then can merge the uicr.hex with your application.hex do:
mergehex.exe -m abc.hex uicr.hex -o merged_uicr.hex

With that you only need to flash merged_uicr.hex to have the address 0x10001208 written when you flash the application.