nRF5 SDK bootloader to load zephyr project

Hello,

We have many devices that are factory programed with a bootloader based on the buttonless DFU bootloader example. Recently we have developed an application using NCS/Zephyr. We have been able to properly DFU our Zephyr application with MCU boot.

What we are having trouble with: We have devices programed with the DFU code from nRF5 SDK and we would like to do a DFU with an application developed with NCS. Is this possible?

We use nRF5 SDK v16.0.0 and soft device s132.

Any help is appreciated!