Elk Audio OS 0.7.0 beta release (w/ Raspberry Pi 4 64 bit support)

Hi everyone,
we were supposed to release this a couple of weeks ago but, given the situation, we had to delay it a little.

This is quite a significant update that adds several features and greatly improve performance.



  • Support for Raspberry Pi 4 64 bit
  • Fixed CPU frequency setting for all architectures. Now the CPU can be set at maximum frequency through elk_system_utils, be careful though to have a proper heatsink installed
  • Fixed SSH keys storage
  • elkpy included in the system image
  • Minor fixes to SW Update

SUSHI 0.10.2:

  • Native LV2 support
  • Ableton Link support
  • Uniformed normalized parameter handling
  • Multiple MIDI ports
  • Extended OSC API

Download links can be found as usual on Github:

Don’t forget to update your SDK if you need to build programs for Elk Audio OS:

Finally, we also added several more plugins to the community repositories. You can find them conveniently packed here for both Raspberry Pi 3 & 4:

We have a lot of other stuff that we are working on and that should be ready to release soon, so keep an eye here for further updates!

And as always, let us know any problem either here or by reporting a Github issue.

The ELK development team



This looks great. Thanks to you and your entire team.

A few questions:

  1. Will there be new Sushi documentation for the additional features, or is the readme page up to date (e.g. extended OSC API)?
  2. Does the new release include more prebuilt Sushi buffer sizes? It would be great if 256 and 512 were provided in addition to the previous complement of 16, 32, 64 and 128 samples.
  3. Would you recommend running the SWU or starting over with a newly flashed card?
  4. I see that FFTW is included in the Elk-SDK. Is there some license included for its use in commercial products, or is that up to each company individually?

Again, thanks!

  • Rick Cohen

Hi RIck, thanks!

We updated the official docs to reflect the current status:

Not currently but that’s something that’s pretty easy to do, in the Yocto recipe we just need to add those numbers to a list.

For the Pi3 I’d strongly recommend using the .swu. For the Pi4, there’s only the choice of flashing directly the SD card since it’s the first release there.

We don’t include the FFTW license in our commercial version. We mostly included for supporting some OS plugins that are using it.


Thanks for the quick reply. BTW, I found that there is a new linux Sushi AppImage too. Some folks might not be aware…

Take care,

  • Rick

indeed good point I created a topic in the relevant section:

3 posts were split to a new topic: Home folder files lost after SWupdate

Hi @Stefano,

The directions here are now slightly out of date:


Because you no longer pass a -b N option to sushi.

  • Rick

Thanks, fixed now together with other minor edits following your suggestions.

A post was split to a new topic: RPi4 not booting from HDMI