BLE DFU update for multiple mcu architecture

[Beldramma]

Hi,

I am on NCS 2.9.0, I have tested lesson 5 exercice from NRF Intermediate course about BLE DFU, I have some questions about it:

- with mcumger, is there a way to update different mcu ? Like I receive firmware from mcu A through BLE, to update mcu B ? Maybe put information about which chip to update in firmware file.

- I have seen that this example uses a fixed service/characteristic, is it possible to use this service in our products legally, when they will be sold ?

- Is there a way to modify this service, or a way to use another custom service ?

Thanks !

[Beldramma]

Hello,

Yeah, what I want to do is to use MCUmgr to update a device with multiple MCU. Main MCU is the one with BLE, and is connected in UART to a second one(with no BLE). I want to be able to update the main MCU, or the second one via BLE.

So for the case where main CPU is updated, this course describes it pretty well. But in my case, i don't know yet how to use MCUmgr when i want to update second MCU, that's why I have looked at the example of multi core update with NRF5340.

Is it clearer for you ? Do you have clues how i can manage this case ?