: Use a program like 7-Zip or WinRAR . Right-click only the .001 file and select "Extract Here." The software will automatically pull data from the other parts to create a single, usable .cia file.
: Once extracted, the .cia file is typically installed onto a 3DS via the FBI homebrew application or played on the Citra emulator. Context of the "Undub" SMTIVA-USA-(UNDUB)-CIA-Ziperto.7z.001
: A fan-made modification that replaces the English voice acting with the original Japanese audio while keeping the English text. : Use a program like 7-Zip or WinRAR
: This indicates the first part of a multi-part 7-Zip compressed archive. How to "Complete" the File usable .cia file. : Once extracted