Because the filename ends in .part1.rar , it is part of a "split" archive. You cannot use only one part; you must have all segments (e.g., .part1.rar , .part2.rar , etc.) in the same folder to succeed.

To use this file, your 3DS must have custom firmware (CFW) like Luma3DS and the FBI homebrew application installed. Launch from your 3DS Home Menu. Select SD → cias (or wherever you placed the file). Select the .cia file.

Once finished, press . A "New software has been added" notification will appear. 4. Important Notes

To put together and install the file , you need to extract the multi-part archive and then install the resulting .cia file onto your homebrewed Nintendo 3DS.