Always merge the update and DLC during creation. You will never have to manually install v64/v80 updates again.
Pro Tip: You can also convert extracted Loadiine RPX folders into .WUA using the same tool. .wua wii u roms
To use Wii U ROMs, you'll need an emulator that supports the Wii U architecture. Here are the general steps: Always merge the update and DLC during creation