Based on standard naming conventions for these types of files, the package likely contains:
To use an .NSP update file, users typically utilize custom firmware and homebrew tools like Tinfoil or DBI to install the data from an SD card or via USB. CHAINDECHOS-(USA)-NSwTcH-NSP-Update114-Ziperto.rar
This is the internal file format used for digital distribution on the Nintendo Switch. Based on standard naming conventions for these types