Aug 02, · I need help in the following matter. I am re installing FSX in my computer and found out that the Service Pack 1 installer is nowhere to be found in the Microsoft Downloads page. A Google search that links to the Microsoft page shows a not found message. However, I was able to find the Service Pack 2 download page and I am downloading it right now. Installing Microsoft Flight Simulator X can be a very useful thing to do if you want to start really getting into the world of aviation and really enjoying it as much as you can. Of course, there’s plenty to do and see so you’ll have your hands full trying to manage it all!4/4(3). Aug 25, · Service Pack 3 Officially Released! Active Sky Next Service Pack 3 has been officially released for both FSX and Prepar3D versions. This update provides numerous improvements and fixes, and is recommended for all ASN users.