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Upload the content of "Yilmaz - (AJAX) Tabbed Advanced Forum Stats vB5" to your root.
that's all it.
enjoy..
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How to uninstall:
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1. Remove the package "yilmazforumstats" that located in /core/packages/
2. Go to "Manage Products" in the admincp and delete the product named "Yilmaz - (AJAX) Tabbed Advanced Forum Stats vB5"

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How to Update:
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After uploading files
-Import XML file (as product) through AdminCP: Plugin System > Manage Products > [Add/Import Product]
OR import the XML file from your server