SharePoint 2010 Service Pack 1

Install updates by this order:

1. SharePoint Foundation 2010 SP1 (not required if you install the server SP)
2. SharePoint Foundation 2010 Language Packs SP1
3. SharePoint Server 2010 SP1
4. SharePoint Server 2010 SP1 Language Packs SP1
5. June 2011 Cumulative Update

After installing any of these packages, run the SharePoint 2010 Products Configuration Wizard.

Also, you may want to read this:

• Service Pack 1 (SP1) for Microsoft SharePoint Foundation 2010 and Microsoft SharePoint Server 2010 (white paper)
• Description of SharePoint Server 2010 SP1
• List of all SharePoint 2010 and Office Server 2010 SP1 packages
• Service Pack 1 for SharePoint 2010 Products is Now Available for Download