"Diablo II Resurrected -NSP--Update 1.0.26.0-.rar" appears to be a compressed Nintendo Switch update package typically found on third-party hosting sites for modded consoles.

This update introduced several long-awaited quality-of-life improvements and bug fixes specifically tailored for handheld and docked play on the Nintendo Switch.

from unofficial sources can sometimes contain executable malware (like files hidden inside). Only install the file contained within.

Confirmed technical fixes ensuring Assassin traps correctly benefit from "–% to Enemy Resistance" modifiers. Expansion Content: Reign of the Warlock