nRF52840 upgrading mBed-os from 5.7.6 to 5.9.6

[Håkan Evertsson]

Hi,

We are developing a device with nRF52840 and mBed-os. We have a bootloader based on SDK 13.0.0.0-1
with softdevice s140 5.0.0-1-alpha.

Changes that has been made to the bootloader is e.g. enabling write protection and adding possibility to
force bootloader into DFU mode.

We are now looking at upgrading mBed-os from 5.7.6 to 5.9.6.

Is there support for running mBed 5.9.6 on nRF52840?

Do we need to upgrade the bootloader and/or the softdevice as well?

Is there a change in how the softdevice/bootloader work that could give problems when upgrading?

[Gourav]

Hello, 

        could you post some use full links for developing custom bootloader for nrf52840 using mBed-os

Regards,

Gourav