Because the data is spread across multiple files, you cannot simply double-click the .001 file using standard operating system tools, which often fail to recognize the sequence.
Ensure all related files (e.g., kdmvarset.zip.001 , kdmvarset.zip.002 , up to the final part) are in the same folder . kdmvarset.zip.001
Use an app like ZArchiver to select and extract the first part. Because the data is spread across multiple files,