Note: If there are multiple parts (part1.rar, part2.rar), you only need to extract the first one. Turn off your Switch. Remove the SD card and connect it to your computer. Create a folder named NSP on the root of your SD card. Copy the .nsp file into this folder.
Download and extract GROVCO-WWP-NSwTcH-[BASE]-NSP-Ziperto.rar on your computer using 7-Zip or WinRAR. GROVCO-WWP-NSwTcH-[BASE]-NSP-Ziperto.rar
Do you need help with (if they are part of the original RAR)? Note: If there are multiple parts (part1
Check if you have enough space on your SD card. The installation requires temporary space roughly equal to the file size. GROVCO-WWP-NSwTcH-[BASE]-NSP-Ziperto.rar