Шаблоны Joomla 3.4

Hi,

I followed your instructions (How to update Joomla 2.5 to Joomla 3.x) and I can not upgrade to version 3.x, I get the message 'You already have the latest Joomla! version, 2.5.11. 'Do you know why? How can I fix it?Are you sure your are posting in product assigned forum?: Yes
What is your CMS version?: Joomla 2.5 MySQL Version: 5.x PHP version: 5.x Link to installation: Joomla Help Have you edited any files? If yes tell us which ones.: No Is this personal or client website?: Personal

Please help

I didn't find the right solution from the internet.

References:
www.youjoomla.com/joomla_support/showthread.php?t=11748
Digital production company

Thanks