Backup your MySQL database
Backup your old Pligg CMS files.
Rename your template folder so that the data is not overwritten by upgrade files. If you use a template name that is not included with Pligg, skip this step.
Disable all of the modules from your admin panel.
You will need to re-enable them after upgrade.
Delete all of the files from your server EXCEPT:
/avatars/ (entire directory)
Upload all of the new files to your server.
If you are able to, I suggest uploading a zip file to the server and extracting it server-side. This will minimize the chances of files being corrupted during FTP transfer, which is a common issue.
Confirm that the CHMOD permissions for the following files or directories are all set to 777.
/languages/ (and all of the content within this directory)
Run the upgrade from /install/upgrade.php
If there are no error messages, delete the /install directory from your web server.
Navigate to your homepage and log in as an "admin" level user.
In some cases you may already be logged in from your previous version of Pligg.
Either update your template to work with the latest version or navigate to /admin/admin_config.php?page=Template and change the template name to "bootstrap"
Re-activate the disabled modules from step 4
IF I Delete all of the files EXCEPT: THIS FOUR
/avatars/ (entire directory)
so there is no another files in the server
no install directory and upgrade.php
how can i upgrade that
Submitting a Question or Comment
By taking a minute to research previous posts you may receive an answer much faster than waiting for a response to a new question. Begin by searching the support section for an answer. Sometimes you may even want to extend your search to the entire pligg.com domain.
If you are unable to find a relevant answer, submit a new question or comment here. Please provide a detailed description and, when necessary, debugging information such as your server environment (a link to a <?php phypinfo(); ?> .php page would be very helpful), your web browser, and any steps necessary to reproduce your issue.
Submitting an Answer
If you have an answer or useful response that you would like to add to a post, you can submit it as a comment which other users will then vote on. Answers are sorted by most popular to least, allowing the best information to climb to the top of the page.
Please read and vote for existing answers before submitting your own, as there may already be an acceptable answer provided. You can use the "Reply" link found within an answer to submit a response to it, in case you want to expand or comment on someone else's contribution.
Including Files or Code
Sometimes it is necessary for you to attach a file or include a snippet of code for others to reference in your response. In most cases, you can .zip up files and attach them to a question or answer using Pligg's file manager. At times though this may fail, and in these circumstances we recommend using a third party host. Below we are including a list of recommended websites where you can share easily share file uploads (or snippets of code) through the web.