Hi,
A priori, your old version of Wampserver was Wampserver 2.2e which included MySQL 5.5.24 and PHP 5.3.13.
But, before installing a MySQL 5.5.24 addon on Wampserver 3.1.0, it must be fully functional, i. e. with green icon and PHP and MySQL functional.
In addition, the active PHP version must be a version of the 5.6 branch, i. e. no PHP 7,7.1 or 7.2.
Download the MySQL 5.5.24 addon
here and install it "as administrator".
Launch Wampserver.
Verify that everything is working, PHP and the current version of MySQL as well as PhpMyAdmin 4.7.7.
Switch to MySQL 5.5.24.
- Left-Click -> MySQL -> Version -> 5.5.24
Verify that the Wampmanager icon is green and that you have access to PhpMyAdmin with root user name and no password.
Exit PhpMyAdmin
Exit Wampserver
Completely replace the contents of the folder wamp/bin/mysql/mysql/mysql5.5.24/data/ with the contents of your old folder "data".
Launch Wampserver and "cross your fingers" to make everything work properly.
If this is the case and MySQL 5.5.24 (with your old data folder) has been successfully started, you should be able to access your database through PhpMyAdmin.
Warning: MySQL - so PhpMyAdmin - will take into account the usernames and passwords you had with your old version.
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Documentation Apache -
Documentation PHP -
Documentation MySQL -
Wampserver install files & addons