yum install http://repo.jetlicense.com/centOS/jetapps-repo-latest.rpm
yum clean all --enablerepo=jetapps*
yum install jetapps --disablerepo=* --enablerepo=jetapps
In the same console please run the following command, to install the current version.
You can install from other tiers by replacing "stable" to "edge" or "beta".
jetapps --install jetbackup-linux stable