This upgrade procedure has been tested on Fedora 27, upgrading an existing OTRS 6 (6.0.2) version to a newer OTRS 6 (6.0.3) version. It has been used twice successfully. Hope this is of help for someone. Open a terminal. Run the following as "root": sudo -i systemctl stop crond.service systemctl stop httpd.service Run the following as "otrs" user: su - otrs cd /opt/otrs/ bin/Cron.sh stop bin/otrs.Daemon.pl stop exit Run the following as "root": cd /opt/ ls rm otrs-6.0.2-03.noarch.rpm ls curl http://ftp.otrs.org/pub/otrs//RPMS/fedora/26/otrs-6.0.3-02.noarch.rpm -o otrs-6.0.3-02.noarch.rpm ls rpm -Uvh otrs-6.0.3-02.noarch.rpm systemctl start httpd.service systemctl start crond.service Run the following as "otrs" user: su - otrs cd /opt/otrs/ bin/otrs.Daemon.pl start bin/Cron.sh start The OTRS 6 has now been updated to a newer OTRS 6 version Regards Rudolf Bargholz