Joomla! 1.7 introduces a Quick Update for sites already Update with Joomla 1.6.5 or 1.6.6 is fairly easy.
To Update Joomla 1.6.5 or Joomla 1.6.6 to Joomla 1.7, do the following:
- Backup your website
- In the top menu, locate the link Extensions. Click Extensions from the drop down menu that appears click Extensions Manager as shown in Image 1.
- Click Update as shown in Image 2
- After click Find Updates, the screen as shown in Image 4.
- Click the checkbox to the left of the Joomla line containing the latest Version Number, then click Update as shown in Image 5.
- When the update has finished, you will be presented with this page.