You're looking for a download link for WinCC Flexible Smart V3 software.
WinCC flexible SMART V3 is the dedicated engineering software required to configure and program the SIMATIC HMI SMART Line wincc flexible smart v3 software download
If you are on Windows 10/11, install the software using "Run as Administrator" and set compatibility mode to Windows 7 . You're looking for a download link for WinCC
: Be aware that the availability of software versions can depend on the product lifecycle. Siemens regularly updates and phases out products. Visit the Siemens Website : Navigate to the
WinCC Flexible SMART V3: Software Overview and Installation Guide
Partially. You can use the "Open Project" dialog and change the device type to Smart V3. However, graphics and scripts may break due to different screen resolutions and control libraries.
How to Download & Set Up WinCC Flexible Smart V3 (Official Sources)