Upgrade from JoomDOC 3 to JoomDOC 4

JoomDOC 3 and JoomDOC 4 have the same database structure so upgrade is very easy. Just uninstall JoomDOC 3 and install JoomDOC 4 via Joomla extension manager. Uninstalling of JoomDOC 3 does not delete any data and JoomDOC 4 will take them. Only JoomDOC global configuration is lost and JoomDOC menu items need to re-save. If you have a paid version of JoomDOC 3 you should ask to change your license to JoomDOC 4 on info@artio.net first and then download current package of JoomDOC 4 from here. You should do a backup before the upgrade.