rpm -Uhv ftp://download.fedora.RedHat.com/pub/fedora/linux/releases/8/Fedora/i386/os/Packages/fedora-release-8-3.noarch.rpm
rpm -Uhv ftp://download.fedora.redhat.com/pub/fedora/linux/releases/8/Fedora/i386/os/Packages/fedora-release-notes-8.0.0-3.noarch.rpm
yum upgrade
reboot
升级过程时间可能有点长，请耐心等待吧,感受快乐吧。