Translations:Upgrading from a previous version/11/en

Upgrading from version 1.50 or later to any later 1.xx version

1. Download the desired version of LimeSurvey.
2. Prepare and backup the old installation.
   1. Backup your installation directory files and SQL-based database just in case.
      1. At the command-line level, make a .zip or similar archive of the whole installation directory tree of files. For example, in Linux 'tar cvzf foo.tgz cps100' will tar and zip the whole of the cps100 directory;
      2. Using [httsp://www.phpmyadmin.net phpMyAdmin] or similar to export all tables; or using the LimeSurvey Administration button to backup the entire database.
   2. Copy your config.php file, modified template directories, and the /upload directory separately for quick access later;
3. Replace all the installation directory files:
   1. Delete all old files in the existing installation directory;
   2. Upload and unpack the new code version into the same installation directory;
   3. Edit or replace the config.php file:
      1. If your previous version was < 1.70: Edit the new config.php in order to reflect the changes from the backup config.php file. Do not just overwrite the new config.php with your old one!;
      2. If your previous version was >= 1.70: Simply replace the new config.php with your backup config.php file (as the file format has not changed);
   4. If your previous version was older than 1.90: Copy any customized templates to '/upload/templates' - you will also need to rename each template directory whose name matches an existing template in /templates;
   5. Copy your '/upload' directory back to the old location;
   6. Double check the permissions set on the directories of LimeSurvey (write access to /tmp, /upload, and to their subdirectories is required) as described in the installation wiki;
4. Finish the installation/upgrade process:
   1. Once you open the URL to your LimeSurvey administration, the database tables will be updated after confirmation;
   2. Remove or rename the '/admin/install' directory as/if instructed by the installation script;
   3. Check if any special manual checks apply (as listed below).