You know, Fedora Silverblue is available for aarch64, but it is not provided as a raw image. As far as I see around, in order to install Silverblue on a Raspberry Pi, a lot of trickies are needed in order to boot the ISO from an USB stick etc. So. I tried to install Fedora IoT, then I added the Silverblue remotes and rebased the system to it. Well. It worked. Do you see any contraindications?
Thanks, A.