Hi
Check out the page
http://www.samsung.com/download/agreement.htm - select 'agree' and then select your model details in the form until you get your download page. Like this:
First column: Mobile Phone
Second Column: Mobile Phone
Third Column: Mobile Phone
Fourth Column: SCH-A670
You'll now see that the 'manual' section is selected. Click on the 'Software' tab in the gray bar and then you'll see a list of software for your phone.
In the first row, click on the icon within the 'file' column. This is supposedly the software that Samsung recommends... If it doesn't, you should take it up with them since they're recommending it!!
MtraX