Sc22621-a0eiidev66692.part1.rar

: Right-click only the file labeled .part1.rar .

: Ensure all parts have the exact same name except for the part# suffix. sc22621-A0EIIDEv66692.part1.rar

: Use a utility like WinRAR (Windows), 7-Zip (Windows), or The Unarchiver (macOS) and select "Extract Here" or "Extract to [Folder Name]" . : Right-click only the file labeled