Introduction  A Step by Step Guide to update Lockheed Martin's Prepar3D v4 using the Update Component Installers This is the Same process as the previous version "v3" with the exception of Requiring to activate Prepar3D v3 again after a Client update.  ------------ When minor updates are released for Prepar3D v4, there are two options available to update Prepar3D v4.  The recommended method is simply updating using the Client installer.  This is the quickest and l