To upload Form Template(xsn) in Infopath 2010

Step 1:Upload form template in central admin

General Application Setting  ->Manage Form Templates

Upload  form template

Step 2:Choose the template and upload.

Step 3: Activate to a  site collection ex:http://sp05:2222

Step 4: Go to site

In Advanced Setting :  Allow management of content types?    Yes

Step 5: Click on Add from existing site content type

Step 6: Add Content Types Change New Button Order and Default Content Type