Where to find Makerbot Desktop 3.6?

Do anyone know where to download Makerbot Desktop 3.6? The only thing available at makerbot.com is 3.8 (or until recently 3.7).

Thanks!

Here's the URLs for Desktop 3.6.

Windows 7/8 64bit: http://s3.amazonaws.com/downloads-ma...64_Install.exe
Windows 7/8 32bit: http://s3.amazonaws.com/downloads-ma...86_Install.exe

Windows 8.1 64bit: http://s3.amazonaws.com/downloads-ma...64_Install.exe
Windows 8.1 32bit: http://s3.amazonaws.com/downloads-ma...86_Install.exe