How do I combine the softdevice, my application, and the dfu into a single hex?

[Akbar Dhanaliwala]

When I try to use the mergehex tool to combine all three my application never seems to get properly combined.

What I'm doing:

mergehex -m softdevice.hex myapp.hex -o sd_myapp.hex

mergehex -m myapp.hex dfu.hex -o sd_myapp_dfu.hex

nrfjprog.exe --program sd_myapp_dfu.hex

thanks!

akbar

[Nikita]

Why not do like this?

nrfjprog.exe --eraseall --programs softdevice.hex --program application.hex bootloader.hex --verify --reset

[Chris]

How can it resolve the checksum issue? I just tried this and yes, it flashes my SD / Bootloader and App, but the boot loader fails to jump to the app since it wasn't loaded via the DFU.