The manual installation of phpBB includes uploading the installation package via cPanel's File Manager or using an FTP client.
Next you should click on the Install tab.All requirements are met on the SiteGround servers so you can safely click the Proceed to next step button.The next page is Installation compatibility. Again this step should be passed without any troubles. The Start Install button is available at the bottom of the page.
You can now click the Proceed to next step button. If you have correctly entered the details you will see a successful connection confirmation.You can click the Proceed to next step button.
On the Administrator details page you can enter the desired administrative details for the newly installed board.
Verify them and again click on the Proceed to next step button. If there are no errors you will get the Tests passed message. You should click on the Proceed to next step button two more times.
The Advanced settings page is the next one. Basically on this page there are no changes you should make. All settings are automatically generated and you can left them untouched. Then again click on the Proceed to next step button.
A confirmation that the database was successfully populated with data will be displayed and for the last time you should click on the Proceed to next step button. This will bring you to the successful installation confirmation page.
At this point you are given two options. The first is to proceed converting the data from an old phpBB2 installation to the newly installed phpBB3. The other is to proceed directly to your newly installed forum.
Note that you should delete, move or rename the install directory before you use your board. If this directory presents, only the Administration Control Panel (ACP) will be accessible.
This finalizes the phpBB manual installation.