You literally just have to read the topic three topics down the list... And you don't have to bump the topic when you only posted it 5 minutes ago. ?
The standard or common way of downloading forum software and uploading it to cPanel for example is not how you go about installing an instance of Flarum at the moment. As mentioned in that topic, you will have to install Composer and then install Flarum using it. There are detailed explanations on how to go about it here, just use the search function. Click here for more information.
