How to download the firmware that's already on an nRF52840 chip?

[David Fogelsong]

For instance, if I wanted to download the firmware that comes on the nRF52840-dongle in order to then write it to a custom board with an nRF52840 chip on it (i.e. so that it has a working USB bootloader on it), how would I do that?

[Jørgen Holmefjord]

Are you asking where you can download the original firmware/bootloader online, or do you want to read back the application from the device's flash?

[David Fogelsong]

Whichever is easier.  I just want to make sure that when I upload the hex file to a blank chip that the bootloader is properly located in flash so that it indeed acts like a bootloader.