Many people create SFOS icons for various projects and some of them are not in line with what Jolla suggested. Some have sharp corners in others the radius or the corner is wrong etc. Its not a big deal obviously but if we can make it better why not. I uploaded the six basic shapes in .svg format on github so anyone can use. You can flip them around to create the rest of the shapes.
Hope this helps and saves some time creating them from scratch.