The software will automatically detect the other parts in the folder, stitch them back together, and give you the original file. Is it Safe?
If you try to open jblnqp.7z.001 by itself and get an error like "Unexpected end of data," it’s because your computer realizes it only has a fragment of the full picture. (001, 002, 003, etc.) in the same folder for the extraction to work. How to Extract jblnqp.7z.001 To get to the files inside, follow these steps: jblnqp.7z.001
How to Extract .7z.001 files - Microsoft Q&A The software will automatically detect the other parts
The jblnqp portion is simply the unique name given to the archive by the person who created it. The Problem: "Unexpected End of Data" (001, 002, 003, etc
Make sure all numbered volumes of the archive are in the same folder on your computer.