From KolmiSoft Wiki

[edit] Notes

NEVER UPGRADE BOTH SERVERS AT THE SAME TIME IF YOU HAVE RUNING REPLICATION LINK, UPGRADE THEM ONE BY ONE, otherwise replication will brake 100%

BACKUP ALL CUSTOM CHANGES YOU MADE TO MOR!

[edit] Process

To upgrade already installed MOR 0.7 to it's newest state (to apply current bugfixes), execute following commands in bash:

svn co http://193.138.191.205/svn/mor/mor_install_script/trunk/ /usr/src/mor
/usr/src/mor/upgrade/0.7/fix_0.7.sh

[edit] Errors

If you get something like:

[root@localhost ~]# /usr/src/mor/upgrade/0.7/fix_0.7.sh
Username, database, password and host were found
svn: '/home/mor' is already a working copy for a different URL
Stopping httpd: [ OK ]
Starting httpd: [ OK ]

Then:

cd /usr/src/mor/upgrade/0.7
./gui_upgrade.sh