nRF52840 Dongle v1.0.0

Programming

The nRF52840 Dongle can be programmed through the built-in USB bootloader.

Before you start, check Getting started.
To program the Dongle, it must be in bootloader mode.

The Dongle can be made to enter bootloader mode in one of the two ways:

When the nRF52840 Dongle has entered the bootloader mode, LD2 pulses red. The Dongle is now ready for programming.

All the nRF Connect for Desktop apps require specific firmware to be present on the nRF52840 Dongle to function correctly. The apps will update the firmware if needed. If you want to upload a custom firmware to the Dongle, you can do this by using the dedicated Programmer programming app, or nrfutil.