You can find official legacy installers directly on the TI CCSTUDIO Download Page .
If you need a specific sub-version, TI maintains a previous versions archive including v5.2, v5.3, and v5.4. Key Features of CCS v5 CCSTUDIO IDE, configuration, compiler or debugger | TI.com code composer studio v5 download
It is highly recommended to use the "Single File" (offline) installers for better stability. Windows: CCSv5.5.0 Windows Installer (~1.2 GB). Linux: CCSv5.5.0 Linux Installer. You can find official legacy installers directly on
Code Composer Studio (CCS) v5 is a legacy but essential Integrated Development Environment (IDE) for developers working with older Texas Instruments (TI) embedded processors. Based on the (v3.8) framework, CCS v5 provides a robust suite of tools for developing and debugging applications across TI's vast portfolio, including Sitara, DSP, and MSP430 devices. Where to Download Code Composer Studio v5 Windows: CCSv5