cannot be restored to a server running the current version

Sometimes we encounter the follow question when use the powershell restore the sitecollection bakup.

Restore-SPSite : Your backup is from a different version of Microsoft SharePoint Foundation and cannot be restored to a server running the current version. The backup file should be restored to a server with version '14.0.0.6123'
or later.

Here is the solve method: Just install the sharepoint server 2010 update version.

First: You should be sure you already install sharepoint server SP1,  if you didn't install it , here is the link to download
http://www.microsoft.com/en-us/download/confirmation.aspx?id=26623, install it .

Second: Download the server version that you should wanted and install. here is the link to  download:http://www.sharepointdesignerstepbystep.com/blog/SitePages/SharePoint%20versions.aspx

Finally, that's all right, goog luck to you!