Dell distributes its OMSA software in RPM packages and even has a yum repo available so you'd think that updating to the next version would be as simple as
yum update, right? Wrong!
You have to remove the old version first, and then install the new version. Oh, and you also need to stop the Dell services, restart ipmi, then restart the Dell services.
Something like this:
yum -y remove srvadmin-* \ && rm -Rf /opt/dell \ && yum -y install srvadmin-all dell_ft_install \ && srvadmin-services.sh stop \ && service ipmi restart \ && srvadmin-services.sh start