nRF5 SDK possible to OTA update to nRF Connect SDK?

[KLLiew]

Hi,

Just need a quick checking on this.

Currently we using nRF5 SDK, after production, is it possible we OTA update the firmware which using nRF Connect SDK?

This very important for us to decide our roadmap of development.

Thank you

Best Regards,

Alan

[Patrick]

I cannot remember where I read this as it ha been a while, probably the NCS release notes, but it was made very clear that it is not possible to do an OTA update from the nRF SDK to NCS/mcuboot. 

[KLLiew]

Hi Patrick,

Sorry to make the confusion, i mean DFU Firmware update. Can we directly update firmware from nRF5 to NCS?

And I just found reference below:
https://nordicsemiconductor.github.io/Nordic-Thingy52-FW/documentation/dfu_connect.html

It sound like we can update from nRF5 to NCS. Please correct me if i'm wrong.

Thank you

[Patrick]

I cannot seem to find the documentation I referred to, and I'm sure someone from Nordic will provide a definitive answer, but I do remember reading that DFU from the nRF SDK to NCS is not possible. It makes sense given that the bootloaders function quite differently.

[Amanda Hsieh]

Hi Alan, 

It is technically possible if you have enough memory. Here is a use case. 

-Amanda H.

[FARLY7]

Good timing with this question. We are also interested in the same thing.

We currently have ~500 nRF52832 devices in the field running nRF5 SDK. These are typically remotely updated over UART DFU to perform firmware upgrades using nRF5 SDK.

We would like to migrate future devices to NCS (nRF Connect SDK), and ideally, update those existing devices in the field to the NCS-based application.

Is this possible using the existing nRF SDK UART DFU Bootloader?

If so, does the existing nRF bootloader and MCUBoot bootloader coexist afterwards?