Press the or - button on your Joy-Con controller to open the options menu. Select Software Update from the sidebar.

Originally designed for cartridge emulation (playing directly from the file without installing). However, modern installer tools allow users to install XCI files directly to their storage just like an NSP. 3. How to Install Pikmin 4 Backups (NSP/XCI)

Place the required .nsp or .xci files onto your console’s microSD card or a connected USB flash drive.

Browse your local files through Tinfoil, select Pikmin 4, and press to install it directly to your MicroSD card. 4. How to Update Pikmin 4