[Darat]

You need to create a plugin called "forumdisplay_start", this is what I created and it seems to work:

Admincp>Plugin system> Add New Plugin

Product: vBulletin
Hook location: forumdisplay_start
Title: "Check for RSS on/off for RSS feed icon on each forum"
Plugin Php Code:

PHP Code:

if ($vbulletin->options['externalrss'])
{
   $show['rss'] = true;
} 


Active: Yes

And then click on save.