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?
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?
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?
Please have a look at this thread.
Please have a look at this thread.