Thanks!
With the dnf provides command I could figure out which package provides the actual blob needed.
No Idea why, but non of the iwl* packages were installed.
What I did now:
# installed the package that provides the blob I copied manually
sudo dnf install iwl7260-firmware
# removed the manually copied blob
sudo rm /lib/firmware/iwlwifi-QuZ-a0-hr-b0-63.ucode
@vgaetera Are the iwlwifi blobs not installed by default?