Upgrading Fedora 11 to Fedora 12 via Yum
yum clean all rpm -Uhv ftp://download.fedora.redhat.com/pub/fedora/linux/releases/12/Fedora/i386/os/Packages/fedora-release-12-1.noarch.rpm yum upgrade yum yum upgrade rpmThen do the rest.
2010:
yum clean all rpm -Uhv ftp://download.fedora.redhat.com/pub/fedora/linux/releases/12/Fedora/i386/os/Packages/fedora-release-12-1.noarch.rpm yum upgrade yum yum upgrade rpmThen do the rest.