DFU OTA complete package update

[Riaan]

Hi,

I got an SDK15.2 project that we converted the bootloader to be both serial and ble for the dfu.

Unfortunately we have a few units in the field that have only the BLE version.

I created the new package, and updating the devices via serial works correct. I can update just the application, or I can update the entire bootloader and softdevice.

But when I try to use the zip package (full one) with the connect android app, (using the dfu) I only seem to be able to update the app image. The bootloader seems to stay the same.

Is this normal? Is there a way to update the bootloader over BLE DFU?

[Amanda Hsieh]

Hi Riann,

But when I try to use the zip package (full one) with the connect android app, (using the dfu) I only seem to be able to update the app image. The bootloader seems to stay the same.

Do you use the unmodified bootloader example to update to the new one?

What is the command you use to generate the package?

-Amanda H.

[Riaan]

Hi,

The bootloader on there is standarnd OTA one from the sdk. The one I am trying to load on there is a modified version that includes both serial and ota.

The image for the first setup was:

nrfutil_5_0_0 pkg generate --hw-version 52 --softdevice s132_nrf52_6.1.0_softdevice.hex --sd-id 0xAF --sd-req 0xAF --bootloader bootloader.hex --bootloader-version 1 --application app.hex --application-version 1 --key-file key.pem package.zip

And the new one is:

nrfutil_5_0_0 pkg generate --hw-version 52 --softdevice s132_nrf52_6.1.0_softdevice.hex --sd-id 0xAF --sd-req 0xAF --bootloader bootloader2.hex --bootloader-version 2 --application app.hex --application-version 1 --key-file key.pem package.zip

I can see that the app gets updated, but the bootloader stays the same

[Amanda Hsieh]

Hi Riaan, 

It might relate to this issue. That is due to how the bootloader works and flash space limitations. It could be possible to do all in one go in a device with a log of flash and/or small softdevice and application, but that has not been handled specifically. 

Try to update SD+BL first then APP. 

-Amanda H.