You must download all accompanying files (e.g., part1.rar , part3.rar , etc.) from the same source. Combine and Extract: Place all parts in the same folder.
Because this is labeled , the file is useless on its own. You need the complete set to access the game data. JD2021-NSwTcH-[BASE]-NSP-(eShop)-Ziperto.part2.rar
The software will automatically pull data from Part 2 and the others to create a single file. You must download all accompanying files (e