...
After you have confirmed that your test version works as it should, copy the test version over the live version. (It is best to do this after peak usage hours, and with your store properly and temporarily disabled from within the PrestaShop back-office.)
Upgrading PrestaShop
We have a dedicated guide for that: Updating PrestaShop
Uninstall PrestaShop
PrestaShop is very easy to uninstall:
- Stop the web server and your database on which PrestaShop is installed, if you can.
- Delete the
/prestaShop(or the name you gave it after the installation, if you renamed it) from the current directory of your Web server (generally 'www'). - Delete your PrestaShop database, using phpMyAdmin.
...