Originally Posted by linuxunix
It seems like RHEL 4.9 ISO are not available and redhat confirms that we need to update RHEL 4.8 to RHEL 4.9.
Any idea how to update it?
Is ISO available?
Yes, you contact RedHat support, and they can help you. If you want RHEL ISO's, they're the place to get them. And, they can help you with upgrade instructions too, since you're paying for RHEL support.
If I was you, I'd do a fresh install of the latest RHEL, instead of upgrading one old version to another.