This patch is often considered the "best" for competitive play and custom maps before the Reforged engine overhaul.
Alternatively, the easiest method is downloading a clean, pre-patched portable version or using a version switcher utility. Tools like or community matchmaking clients allow you to toggle your game directory precisely to patch 1.30.a or 1.30.4 with a single click. Step-by-Step Installation Guide warcraft 3 frozen throne 130 download best