Welcome to the forum.
Upgrading is quite simple :
. step 1, do a full backup
. step 2, download the correct package (depending on your OS)
. step 3, untar the package
. step 4, launch ./install.sh and agree to upgrade
. step 5, look at Zimbra upgrading
. step 6, once upgraded, do a full backup (because your previous backup is not usable by the upgraded Zimbra) |