This is a z image image to image upscaler, created by @Sornio https://www.youtube.com/@Sornio
i use a Advanced k sampler but you can use a regular one,
to change denoise on the advanced k sampler, simply change the start_at_step, making sure its always under the amound of steps and the end_at_steps (30)
you can change the resolution with the upscale latent,
Thats about it, have fun!