Follow the installation guide.
To update from a version 3.5 or highest, you need to upload the following files and folders:
- admin/
- index.php
When all the files are uploaded, you need to log into your administration panel.
If you have a version of PicsEngine between the 3.0 and 3.2.2, do these operations.
- Move the folder admin/cache and admin/conf at the same level than admin and pictures.
- Upload the admin folder, the templates folder and index.php of the new version.
When all the files are uploaded, you need to log into your administration panel.