Converting to WUP required attention to metadata. Title IDs and certificates were edited to match the installer’s expectations, cryptographic headers were preserved or re-signed depending on the payload used, and ICON and meta files were crafted so the resulting channel would appear native on the Wii U menu. The installer itself — chosen after testing a few variants — needed to be the kind that respected the console’s SysMenu and accepted large WUP packages. The enthusiast tested on a spare SD card first, creating a controlled sandbox before touching the main internal NAND.