Translations:Upgrading from a previous version/9/en

Upgrading from version 1.50 or later to any later 2.xx version

1. Download the latest 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 phpMyAdmin or similar to export all tables; or use the according 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. 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.
   4. Copy your /upload directory back to the old location
   5. Double check the permissions set on the directories (write access to /tmp, /upload and and their subdirectories is required) as described in Installation
   6. Open http://<yourdomain>/<yourlimesurveydir>/admin in your browser and follow the instructions (you can use the old config.php as reference). The existing database will be automatically detected and , if necessary, upgraded after confirmation.
4. Check if any special manual checks apply as listed below
5. Now clear your browser cache and cookies!
6. You are done (:biggrin:).