430.7z.001 (Tested)

: You must have every numbered part in the same folder.

: This is the native tool for these files (Windows). Mac users should use Keka or The Unarchiver . 📖 Step-by-Step Guide 1. Gather the Parts 430.7z.001

: Every part must have the exact same filename (e.g., 430.7z.001 , 430.7z.002 ). : You must have every numbered part in the same folder

The file extension indicates that you have the first part of a split compressed archive created by 7-Zip . 📖 Step-by-Step Guide 1

Select > Extract Here (or "Extract to [Folder Name]").

Are you getting a when you try to open it?

If you prefer the terminal, move to the folder and run: 7z x 430.7z.001 To help you further, I'd need to know: What are you using? Do you have all the parts (e.g., is there a .002)?