Here’s a solid, no-fluff guide to understanding — what they are, how they’re structured, and how to use them (primarily for USB loading or emulation). 1. What is a WUP archive? A WUP archive (also called WUP files or WUP installable format ) is the official Nintendo content format for the Wii U. It’s named after the WUP (Wii U Project) codename.
These archives contain ready to be installed to a Wii U USB drive or NAND via system tools like WUP Installer GX2 . wii u wup archive