What is the difference between SoftwareVersion 3.2.2 (Build: 5845EX) and SoftwareVersion 3.2.2 (Build: 5859EX)? All of my 200's with the exception of the latest one purchased are running build 5859EX the latest one purchased is running build 5845EX. The one with 5845EX has been setup for several weeks and does not indicate it needs an update. Can I download the 5859EX build, if so where?