Universal Blue images need manual intervention for updates

The Universal Blue
project, which produces operating system images based on Fedora's Atomic Desktops,
has issued an announcement
that manual steps are required to continue receiving updates. Jorge
Castro wrote:

If you use Bazzite, Bluefin, Aurora, or any other Universal Blue
image (including our toolboxes) then you need to follow the
instructions in this announcement in order to ensure that your device
is getting updates. We were rotating our cosign keypairs this morning,
which is the method that we use to sign our images.

During this process I made a critical error which has resulted in
forcing you to take manual steps to migrate to our newly signed
images.

This applies to all Universal Blue images released before July 2,
2024. See the full announcement for instructions. LWN covered Bluefin in
December, 2023.