How to use the nrfutil to do the OTA on nRF52840 DK
Here are the materials how to run the nrfutil on the PC as host tool (connecting with dongle) and then do the OTA FW upgrade.
- nRF52840 DK as the DUT (device test unit for target board).
- nRF52832 DK as the connectivity board to connect with Host Computer
- Running the nRFutil (download from URL nRFUtil)
All the details can be found at URL.