From yesterday can download the service pack 1 of Windows Vista in Italian. After March 18 last was issued the first service pack of Windows Vista in five languages (English, French, Spanish, German and Japanese) is therefore the time of the release of 36 other languages including Italian.
You can download the service pack 1 in view of the Italian via Windows Update or by downloading the standalone version. The standalone version (executable file) can be downloaded from the following pages:
The Service Pack 1 is also available in Italian in iso format on the following pages:
On this page you can find the list of Hotfixes and Security Updates included in Windows Vista Service Pack 1, each of which contains a link to a page (also translated into Italian) containing information on the specific hotfix or security update.
In the event that windows update does not show the presence of Service Pack 1 This could be due to several reasons including the presence of a pre-release version of SP1 installed previously and the presence of some drivers.