Deploy software updates for Office Project Server 2007

Must read before deploying any software update (Service Pack 1 for instance!) to your EPM farm:

https://technet2.microsoft.com/Office/en-us/library/c3b86049-7cba-4b9c-8335-e37fb6e7518a1033.mspx

This article is designed to provide guidance that IT professionals can use to deploy the Service Pack 1 (SP 1) update to a Project Server 2007 deployment. It covers what to do before you begin installation, the installation steps, and how to verify the installation.

Microsoft Office Project Server 2007 is built on Windows SharePoint Services 3.0. Before installing the Office Project Server 2007 SP 1 update, you must first install the SP 1 update for Windows SharePoint Services 3.0. See Deploy software updates for Windows SharePoint Services 3.0 for detailed information about applying the Windows SharePoint Services 3.0 SP 1 update across various deployment scenarios.