: Download every part of the set (part1, part2, etc.).

To get the playable .xci file, you must follow these steps according to Ziperto's FAQ :

: Indicates this is the third volume of a split archive. You need all parts (e.g., part1, part2, part3) to successfully extract the final game file. How to Extract Multi-Part Files

: Place every part in the same directory on your computer.

: A "game card image" format that mimics a physical Switch cartridge. Ziperto : The source website where the file was hosted.