Siemens provides ProSave as a service tool, but you typically need a free account.
If you have the installation media for WinCC flexible or TIA Portal V15 , ProSave is already included in the \Support\ProSave\ folder on the DVD. Key Features of ProSave V15 Download Simatic Prosave V15
Siemens has integrated ProSave functionalities into newer TIA Portal versions. For legacy devices, use the “Download Collection” for your specific HMI model, or consider using TIA Portal V15 itself (which includes ProSave components). For direct download issues, log into the Siemens Support site and use the “Support Request” form to get a direct link. Siemens provides ProSave as a service tool, but