You only need to interact with the first file in the sequence. Right-click on FS_10DStfnftum7u.part1.rar . Choose "Extract":
All parts must have the exact same name except for the part number (e.g., FS_10DStfnftum7u.part2.rar ). 2. Required Software
The original software for RAR files, available at win-rar.com. 3. Step-by-Step Extraction Guide
Select 7-Zip > Extract Here or Extract to "FS_10DStfnftum7u" . In WinRAR: Select Extract Here .