Installation and Upgrade Instructions for XenForo 2.0
Full details of how to install and upgrade XenForo can be found in the XenForo 2 Manual.
Note that when upgrading from XenForo 1.x, all add-ons will be disabled and style customizations will not be maintained. New versions of add-ons will need to be installed and customizations will need to be redone. We strongly recommended that you make a backup before attempting an upgrade. Once upgraded, you will not be able to downgrade without restoring from a backup.
Installation, Upgrading and Configuration of Add-ons
XenForo 2 add-ons have a standard structure so installation and upgrade processes will generally be the same for all add-ons. General add-on installation and upgrade instructions can be found in the XenForo 2 Manual.
Within the manual, there are specific pages discussing how each add-on can be used and configured.