Right-click only the first file ( part01.rar ) and select "Extract Here" using a tool like WinRAR or 7-Zip. This will automatically pull data from part09.rar and all other subsequent parts to rebuild the full installer.
If you get an "unexpected end of archive" or "next volume is required" error, it usually means one of the parts (like part09) is missing or has been renamed.
Based on general file structure for such downloads, here is what you need to know: File Function
You cannot use this file alone. You must have all parts (e.g., part01 through the final part) in the same folder to successfully extract the contents. How to Use