You will need a payload.elf file inside "SD://wiiu/"! Then click "HAXX" and wait.
If it hangs, try deleting your browser save data.
If you get an error, try reading it.

It is recommended to install Aroma together with Tiramisu.
You can also download the original JSTypeHax Payload that will start the Homebrew Launcher.

JSTypeHax was made by orboditilt.