Do you want to make Fedora 30 better? Please spend 1 minute of your time and try to run:
sudo dnf --releasever=30 --setopt=module_platform_id=platform:f30
If you get this prompt:
Total download size: XXX M
Is this ok [y/N]:
you can answer N and nothing happens, no need to test the real upgrade. Upgrades will be
fine for you.
But very likely you get some dependency problem now. In that case please report it against