Actually from IOS4 and on, you can't get files via USB directly without entering the passcode. The filesystem itself is encrypted (AES256) and unlocked once the

Actually from IOS4 and on, you can't get files via USB directly without entering the passcode. The filesystem itself is encrypted (AES256) and unlocked once the passcode is entered on the device. However I believe without a passcode you can still just use USB to access everything.