This is the most critical section. Misunderstanding title key legality has led to site shutdowns (e.g., the infamous Wii U USB Helper takedown).
Open Notepad and paste your keys in this format: cemu wii u title keys
# Wii U Title Keys
[d8000e51] e59be459f1fe2b9d9a7e3f9a1c2b3d4e = Super Smash Bros (USA)
[0005000010144f00] 5a7b3c9d1e2f4a8b6c0d3e5f7a9b1c2d = Zelda Breath of the Wild (EUR)
The moment you share a title key alongside the encrypted game it unlocks, you’re facilitating copyright infringement. This is why: This is the most critical section
Nintendo uses a layered encryption system: The moment you share a title key alongside
Why two layers? If hackers found the common key (they did: it’s 0xD7B004026CDAEBAFCDD55F9B6F778EF7), they still couldn’t play encrypted games without each game’s specific title key.
Once you have your keys.txt file, here’s how to make Cemu recognize it.