merging bootloader,softdevice and app files not workng

[xtian]

good day,

may i know another way to combine the bootloader, softdevice and app hex files into a single hex file?

already created a bootloader setting before merging with bootloader, softdevice and app hex files but device enters dfu mode after flashing.

followed the guide from the link below:

 Getting started with Nordic's Secure DFU bootloader, a step by step guide 

i am using nrf52832 with SDK17.1

used nrfutil to create bootloader setting, mergehex for merging files and nrfjprog for flashing.

[Hung Bui]

Hi Kristian, 

Before testing with merge.hex have you made sure. 

- BL + SD work when you flash them ? 

- BL + SD + APP + BL settting  work when you flash them one by one , not with merge hex ? 

Which mergehex version are you using ? 

[xtian]

BL+SD works

as for BL+SD+APP+BL Setting, should they be flashed in order?

[xtian]

tried flashing one by one and it works.

so i tried merging again 2 at a time and now it works too

1. Bootloader + Bootloader setting = BL_BLS.hex

2. BL_BLS.hex + softdevice = BL_BLS_SD.hex

3. BL_BLS_SD.hex + app = merged_app.hex

don't know why it did not work before. by the way, using mergehex version 10.16

thanks

[Hung Bui]

Hi Kristian, 
I'm not sure why merge 3 file at once didn't work. 
Could you try to compare the 2 hex files ? I usually use Notepad++  but it may not work with large hex file. But you can try this: how to compare two hex files