Altium Designer Summer 09 Build 9.4.0.20159 Portable.rar [repack] Today
The build number 9.4.0.20159 identifies the exact compilation of the source code.
While the build is stable, it may struggle with high-DPI displays or modern driver signatures on Windows 10 and 11. Best Practices for Using Legacy Altium Builds Altium Designer Summer 09 Build 9.4.0.20159 Portable.rar