或者直接下载：
i386系统
wget http://linuxdownload.adobe.com/adobe-release/adobe-release-i386-1.0-1.noarch.rpm
rpm -ivh adobe-release-i386-1.0-1.noarch.rpm
rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-adobe-linux
yum install firefox.i386 flash-plugin
x86_64系统
wget http://linuxdownload.adobe.com/adobe-release/adobe-release-x86_64-1.0-1.noarch.rpm
rpm -ivh adobe-release-x86_64-1.0-1.noarch.rpm
rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-adobe-linux
yum install firefox.x86_64 flash-plugin
更新 Flash player：
yum update flash-plugin
原文：http://www.cnblogs.com/lvlv/p/4044401.html