how do I increase Version in SwfDotNet.IO

I myself am not familiar with SwfDotNet.IO but I am familiar with programming wrapper classes for Flash... I could be wrong... but in my experience the only way to support a different version is to modify the code that wraps it. In short, you may have to get a newer version of SwfDotNet and won't be able to do it from your code unless you create your own wrapper class since form-hosting flash SWF's are essentially ActiveX.