Ensure you have the first part (e.g., JIIMORIKI.7z.001 ) and any subsequent parts ( .003 , .004 , etc.) in the same folder .

Because .002 is a continuation of the first volume, you cannot open it directly. Attempting to do so often results in an "Unknown format" or "Cannot open file as archive" error. Follow these steps to extract the data:

If extraction fails, it usually means a part is missing or corrupted. You can try to fix archive errors using WinRAR's repair tool if the original files cannot be re-downloaded.

All files must have the exact same base name (e.g., JIIMORIKI.7z ) followed by their sequence number.