Use MJUpgrade Component to update version
1.Open the Joomla in the administrator section.
2.MJUpgrade Component is loaded into the computer.
3.Click Extensions, select Install / Uninstall.
4.Log in to the administrator system. Select the file you want to install. Click Upload File & install.
5.Click Components, select MJUpgrade.
6.Open the System Upgrade plugin.
7.Click Components, select MJUpgrade.
8.Set up and press Start Upgrade.
9.Wait for version upgrade program.
10.Click on Administrator to view results.