Prepare RAKWireless RAK4631 (nRF52840 board) for Zephyr bootloader

[Claudio Rosa]

I am working with Zephyr RTOS and I would to prepare one of my RAK4631 with a Zephyr bootloader.

I know that in the RAK4631 documentation we have instructions how to flash a new bootloader using Nordic nrfutil: [Converting RAK4631-R to RAK4631]. 

Could you help me?

Regards,

Claudio Rosa

[Øyvind]

Hello, 

You will need to reach out to RAK Wireless in order to get correct steps. 

Kind regards,
Øyvind

[Claudio Rosa]

I already did and they answer that they don´t give support do Zephyr.

Let me remind you that a RAK4631 is in the Nordic Zephyr Supported Boards List included since Zephyr 2.6.0 .

I know how to rebuild the bootloader in a RAK4631(Nordic nRF52840 + Semtech SX1262), but I don´t have the Zephyr bootloader files (MCUBOOT).

For example:

nrfutil.exe dfu serial -pkg rak4631_factory_bootloader.zip -p COM5

after 

adafruit-nrfutil --verbose dfu serial --package rak4631_factory_softdevice.zip -p COM15

github.com/.../Adafruit_nRF52_nrfutil

Could you say where I can find Zephyr bootloader files (the .zip in the example)?

Claudio

[Claudio Rosa]

As I didn´t have any answer after 3 days, I will close this case because I already received answer from another similar case. 

[Claudio Rosa]

As I didn´t have any answer after 3 days, I will close this case because I already received answer from another similar case.