What's new in this release:
* Code refactoring;
* Compatibility update;
* .NET Edition: Target .NET Framework has been changed to 4.0. If you need to use it with early version you can rebuild it from sources;
* .NET Edition: WinForms demo applications have been updated for Visual Studio 2010 and target .NET Framework 4.
https://www.btframework.com/irdaframework.htm