Silverblue version upgrades with RPM Fusion

Hello everybody,

I’m new to Silverblue and quite impressed by its concept as well as the project in general. Today I installed it on my production laptop and set the distribution up for day-to-day use. As this requires me to use multimedia applications/video playback, I also installed the software codecs from RPM Fusion as described here: Howto/OSTree - RPM Fusion

Everything seems to work fine and reliable for now. However, I’m a little confused by the last section of the HowTo given on, talking about major version upgrades. The HowTo suggests to

rebase theses RPM “along” the normal “ostree” rebase

using the following command:

sudo rpm-ostree update --uninstall rpmfusion-free-release --uninstall rpmfusion-nonfree-release --install rpmfusion-free-release --install rpmfusion-nonfree-release

As a new user of an immutable distro, this seems a little imprecise to me. The command itself is rather understandable, but when am I expected to execute it? Should I do this reinstall hack before or after the actual rebase (of the Fedora version)?

Best regards and thanks for your answers,