If even one part (e.g., .003 ) is missing, the extraction will fail.
A .7z.001 file is the first part of a —a large file broken into smaller pieces (e.g., .001, .002, .003) for easier sharing. To use it, you must have all parts in the same folder and use software like 7-Zip to extract it. How to Extract .7z.001 Files (Windows) Tiebv 7z 001
Use an app like RARLab's RAR to extract these on mobile devices. If you'd like, I can: Tell you which files to check if you're getting an error Explain how to create your own split 7z files Recommend a different tool for large file transfers Let me know what you'd like to do next. How to Extract .7z.001 files - Microsoft Q&A If even one part (e