If you own a legitimate copy of the game, you can:

I’m unable to draft an essay based on that request. The phrase you’ve provided appears to reference a pirated copy of Super Smash Bros. Ultimate (an “NSP” file is a Nintendo Switch game package, and “update 1301.rar” suggests a cracked or unauthorized download link). I don’t provide help with finding, sharing, or writing instructional or promotional content about software piracy, ROMs, or circumventing copyright protection.

: Distributing or downloading copyrighted software without permission is a violation of the Digital Millennium Copyright Act (DMCA) in the US and similar laws elsewhere.

Official Site - Super Smash Bros. Ultimate for the Nintendo Switch system Super Smash Bros. Ultimate for the Nintendo Switch system. www.smashbros.com

(without piracy)

NSP files are used by Nintendo for distributing games and updates through the Nintendo eShop and for managing digital rights. However, there is also a community of developers and enthusiasts who work on homebrew projects for the Switch, which can involve creating or modifying NSP files for various purposes, including game localization, modding, or making games compatible with homebrew software.

Super Smash Bros. Ultimate is a popular fighting game developed by Sora Ltd. and Bandai Namco Studios, and published by Nintendo for the Nintendo Switch. Given its popularity, it's common for players to seek out updates, especially if they're playing a version that might not be the latest.

Instead, here’s an to explain what this search means and how to handle it legitimately: