SLAC's Stanford Positron Electron Asymmetric Ring (SPEAR3) Booster Radio Frequency (RF) system was recently upgraded where the existing klystron providing RF power to a 5-cell cavity was replaced with a Solid State Amplifier (SSA) [1]. The Low Level Radio Frequency (LLRF) Controls to drive the SSA was provided by a high performance Field-Programmable Gate Array (FPGA) based system built on SLAC's Advanced Telecommunications Computing Architecture (ATCA) modules. RF Cavity Tuner Controls were replaced with EtherCAT-based stepper motor controller. New hardware was designed and built for programmable logic controller (PLC) based Machine Protection System (MPS). Fast digitizers to sample and acquire LLRF signals were implemented in a LinuxRT Server. All of these required new controls software implementation. This paper describes the controls associated with each of the above hardware upgrades. Show Partial Abstract