How to generate a Bootloader + Softdevice + Application zip for OTA updates/DFU.

[Mr Sunshine]

Hello,

For OTA updates or DFU I want to create a zip file that contains the Bootloader, Softdevice, and Application into one, But when I generate this through nrfutil.exe and update it with the nRF Toolbox I only see that the application is updating. When updating the screen of the application starts at 2/2, so I assume that the bootloader and softdevice are skipped.

For more information I use the nRF52832 chip and I use the SDK 15.0.0. version (which uses the s132_nrf52_6.0.0_softdevice). The code I use to generate the zip is:

nrfutil pkg generate new_DFU.zip --hw-version 52 --sd-req 0xA8 --sd-id 0xA8 --softdevice softdevice.hex --bootloader-version 0 --bootloader bootloader.hex --key-file key_node.pem --application-version 0 --application application.hex

What am I missing? What am I doing wrong?

[Turbo J]

The nRF52832 does not have enough flash for BL+SD+APP in one step. You need to update BL+SD first, and then DFU the App from a separate zip.

[Mr Sunshine]

thanks for the info. Although this link describes that the SD + (BL) + APP will be updated in consecutive connections. So I assume that it does do it in two separate steps but that It requires only one ZIP. And when I apply this update I see on the nRF toolbox app the (2/2) text appearing, but somehow It doesn't do the first part of de update with the SD + (BL).