With the "4.1-pre" pre-release, the open source slicer Kiri:Moto (which also do CAM and laser) is now capable of controlling your Bambu printer without using any proprietary and closed binaries.
More info: https://bsky.app/profile/grid.space/post/3lhaixvt7222w
Pre-release: https://github.com/GridSpace/grid-apps/releases/tag/4.1-pre
Official website: https://grid.space
Here is a short video showing how to execute and use this new release with your Bambu printer:
https://www.youtube.com/watch?v=L5vuGThjsdk