You must have a console with Custom Firmware (CFW) to install .cia files. How to Extract (RAR) Parts? - Ziperto
Because this is a (indicated by .part1.rar ), you cannot extract just the first part. You need all related parts in the same folder. POKUS-WRLD-CIA-RF-Ziperto.part1.rar
: The software will automatically pull data from all parts to create a single .cia file. Step 2: Install the Game You must have a console with Custom Firmware