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Upgrade from existing phpBB 2.0.4
If you are already using Mods in your Forums that required Database Changes you may have problems installing this version. The included Database Update tool only creates fresh tables for the Mods and does NOT update any existing MODs you are using to the latest version. So what does that mean ? If you are running a phpBB 2.0.4 with for example Attachment Mod 2.3.5 or Lower you first have to update your Database to the Attachment Mod 2.3.6 that is included in phpBB2 plus. Check the directory docs/mods for information on the versions that are used in phpBB2 plus. If you have no Mods in your Forum that required Databse Changed just ignore this and go on.
Backup all your Data ! All Files from your FTP and also your SQL Database ! Don't cry if something goes wrong and you have no Backup !
Unzip the phpBB2 plus zipfile to a directory on your local harddisk
Upload only the File db_update.php to your existing phpBB2 Directory on the webserver
Login to your Forum as Administrator
Now open the File you uploadet before in your browser (http://your.forums.com/phpBB2/db_update.php)
You should see that additional tables are created now (Added/Updated)
Download the file config.php from your existing phpBB2 Forum and put it in a secure place (You need it later !)
Did you already Backup your old Data ? If not, now it's the last chance to do it !
Delete all Files of your old forums now (If you have own templates, images or graphics backup them first)
Copy all Files from the phpBB2 plus package to your Webserver (including directory structure)
Copy the file config.php that you backup'd before to your phpBB2 Dir on the Webserver (overwrite the one that exists)
Delete or rename the directorys /install and /contrib
Change Permissions (CHMOD) to 777 on the directorys /files and /images/avatars and album_mod/upload and album_mod/upload/cache
Use the new Forum