Tool for flashing nrf52840 SoC while doing Firmware upgrade

[Tamizh]

Hi,

I'm using nrf52840SoC(flashed with open-thread rcp firmware) on a custom IMX-ULL-6 board. Is Jlink the only way to flash the firmware into the nrf52840 SoC? 

I'm asking this because after product deployment, if I want to provide a firmware upgrade to the devices, it won't be possible to use JLink, right? 

So,

1)Is there any other way to flash the firmware into the SoC?

2) Which upgrade method do you suggest for my use case with a firmware upgrade?

[Marte Myrvold]

Hi,

You can use a bootloader to perform a device firmware update. With the OpenThread RCP application, the best option is to use serial recovery. With serial recovery, you can perform DFU at boot.
One of my colleagues has made some samples showcasing how to do this, both over UART and USB, which you can find here: https://github.com/hellesvik-nordic/samples_for_nrf_connect_sdk/tree/main/bootloader_samples/serial_recovery. This code is not thoroughly tested or qualified and should be considered provided “as-is”. Please test it with your application and let me know if you find any issues.

Best regards,

Marte

[Tamizh]

Hi Marte Myrvold ,

Thanks for your response.

I will try the above method and will update you regarding the results.

Thanks.