This write-up explains what update 13.0.1 contains, the technical nature of NSP files and RAR archives, and the intended use case for such distributions.

Standardizes netcode protocols for local wireless and online matchmaking. Deciphering the File Name: "nspupdate 1301rar upd"

: Received nerfs aimed at reducing her oppressive safety, specifically increasing her landing vulnerability on Neutral Air and reducing her shield-pressuring capabilities.

: For NSP files, you'll typically need a tool like Nintendo Switch Homebrew (often involving CFW - Custom Firmware) to install the update on your Switch. This process can be risky and may void your warranty or even brick your console if not done correctly.