Right-click only the .001 file and select "Extract Here" or "Extract to..." using 7-Zip or WinRAR. The software will automatically detect and pull data from the .002 file and any others in the sequence to reconstruct the original content.
To successfully access the content within this file, you must treat it as part of a set rather than an individual archive. How to Open and Extract These Files JIIMORIKI.7z.002
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. Right-click only the