I need use DFU on Linux embeded , how can I do ?

[johnny]

Hi 

I am developing  RX device to connect with Smart Remote 3.  

The RX device system is  Linux embedded. I need to run OTA function in Linux embedded to  update SR3 F/W.  

I already get this link as below, but i don't know how to operate it. Is there any manual, or instructions?

https://github.com/NordicSemiconductor/pc-nrf-dfu-js

Sincerely,

Johnny

[JuP0]

For anyone landing here from a search: this works on embedded Linux today —
and note that pc-nrf-dfu-js has been archived since 2022.

We built a small Go CLI for this, primarily for our own production test
benches:

github.com/.../ed-nrfdfu

It talks to BlueZ over D-Bus and runs Nordic Secure DFU over BLE from the
terminal. Single static binary, no runtime and no system dependencies — you
copy one file onto the target and run it. We publish linux/amd64 and
linux/arm64 builds.

    ed-nrfdfu --mac "AA:BB:CC:DD:EE:FF" --dfuPath firmware.zip
    ed-nrfdfu --bleName "MyDevice_DFU" --dfuPath firmware.zip

Where it fits: it does the job on a production bench, running unattended in
a script. It is an experimental tool though, not a certified production
component — but it is Apache 2.0, so it is meant to be forked and adapted
rather than taken as is.

If you are tight on flash, it compresses well:

    CGO_ENABLED=0 go build -trimpath -ldflags "-s -w"
    upx --best --lzma ed-nrfdfu

That takes it from ~15 MB down to ~3 MB here. Worth knowing that UPX
decompresses into RAM at startup, so it trades memory for flash — usually
the right trade on a board with more RAM than storage, not always.

One prerequisite: it expects the device to already be advertising in
DFU/bootloader mode. It does not trigger the buttonless transition from
application firmware.

Linux/BlueZ is what we run daily; the macOS and Windows backends are
implemented but not yet validated on real hardware.