Step 1 :
rpm -e --nodeps redhat-release
Step 2 :
rpm -e --nodeps yum-rhn-plugin
Step 3 :
wget http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-5
Step 4 :
rpm --import RPM-GPG-KEY-CentOS-5
Step 5 :
rpm -Uvh http://mirror.centos.org/centos/5/os/x86_64/CentOS/centos-release-notes-5.3-3.x86_64.rpm
Step 6 :
rpm -Uvh http://mirror.centos.org/centos/5/os/x86_64/CentOS/centos-release-5-3.el5.centos.1.x86_64.rpm
Step 7 :
wget http://mirror.centos.org/centos/5/os/x86_64/CentOS/yum-3.2.19-18.el5.centos.noarch.rpm
Step 8 :
yum clean all yum update
