The file [0100701015846000][v0].nsp.rar is a compressed archive containing a base version Nintendo Submission Package (NSP) used for Switch software. Users must extract the RAR archive to access the .nsp file, which can then be installed on modded consoles or emulated. To learn how to manage and install these files, check out this guide on YouTube . Need to open, create, or convert a RAR file? - WinZip