This document provides an overview of upgrading the Hardware Management Console (HMC), Flexible Service Processor (FSP), and IBM i (formerly AS/400) firmware. It discusses the components, how they are connected, and the upgrade order. First the HMC code is upgraded, then the FSP server code, and lastly the Licensed Internal Code (LIC) and IBM i. The document reviews upgrading the HMC software, both corrective service patches and new releases. It also covers upgrading the FSP licensed internal code, both as a code change and new release. The relationships between the HMC, FSP, and partitions are explained.