Combined DFU not working.

[Abhilash kedari]

* Query on Combined DFU :
1. nrfutil version being used : 2.3.0
2. Followed nRFUtil for Generating DFU packages from -> https://infocenter.nordicsemi.com/index.jsp?topic=%2Fug_nrfutil%2FUG%2Fnrfutil%2Fnrfutil_pkg.html
3. The nrfutil command used to generate .zip package:
nrfutil pkg generate --debug-mode --hw-version 52 --sd-req 0x98 --application <App Binary hex file> \
                                                                --softdevice <Merged Hex of BLSetting and Softdevice S132 v5.0.0> \
                                                                --bootloader <Custom Bootloader Hex File>  \
                                                                --key-file <Key_file.pem>
4. Bootloader was not updating ,only the application is updating with new version.
5. How to update the Bootloader + app + softdevice + key in a single DFU ?

[Amanda Hsieh]

Hi Abhilash, 

Do you test the bootloader example or customer bootloader? Are you able to test with the example bootloader?

Please try the command as the following:

nrfutil pkg generate --hw-version 52--sd-req 0x98 --softdevice s132_nrf52_5.0.0_softdevice --bootloader-version 1 --bootloader secure_bootloader_ble_s132_pca10040.hex --application app.hex --application-version 1  --key-file <private.key> dfu_update_sd_bl_app.zip

4. Bootloader was not updating ,only the application is updating with new version.

How do you know the bootloader is not updated? 

The SD (+ BL) + APP update is done with two consecutive connections unless a custom bootloader is used. First, the SD (+ BL) is updated, then the bootloader will disconnect and the (new) BL will start advertising. Then the second connection to the bootloader will update the APP. Do you see that?

 

 Regards, 

Amanda