Mark is exactly correct. After clicking on the URL below, there should be a link labeled "Service Packs" below the Support section. One of the options on the next page will be 4.1.
http://www.blackberry.com/products/s...ge/index.shtml
And they say i am a newbie!
I am not sure, however, what all is included with 4.1 other than some updates related to Bluetooth.