It is easy to update Joomla 3 to latest version.
Kindly follow below step to update Joomla 3 to latest version from Joomla 3 administrator dashboard.
1. Log in to Joomla 3 as administrator.
2. In the top menu bar, go to Components -> Joomla Update.
3. Click “Install the Update” to update to latest version.
4. After that, will see the update is processing.
5. Well done. You are successfully update your Joomla 3 to latest version. Enjoy it!