✨ FLUX — UltimateSD Upscale — Simple Workflow

A clean, all-in-one FLUX UltimateSD Upscale workflow built entirely with the UmeAiRT Toolkit for ComfyUI.
Only 6 nodes. No spaghetti wires. Just load your model, write your prompt, and hit generate.

⚠️ IMPORTANT — Nodes 2.0 Required

This workflow is built for the Nodes 2.0 (Vue) interface of ComfyUI. If you don't enable it, the workflow may have display problems.

How to activate Nodes 2.0:

1. Open ComfyUI

2. Go to Settings (⚙️ icon, bottom-left)

3. Find "Use Nodes V2 (Vue)" and toggle it ON

4. Refresh the page

5. Load the workflow

If you prefer the classic interface, check out my Legacy version of this workflow instead (link).

📦 Custom Node Required

Only one custom node to install:

👉 ComfyUI-UmeAiRT-Toolkit

Install via ComfyUI Manager (search "UmeAiRT") or use the UmeAiRT Auto-Installer.
The Toolkit packages everything internally — upscaler, face detailer, metadata saver. No other custom nodes needed.

📂 Files you need (in manual version)

for "base" version :

Model : flux1-dev-fp8.safetensors or flux1-dev-fp16.safetensors
in ComfyUI\models\diffusion_models

CLIP : clip_l.safetensors
in ComfyUI\models\clip

for GGUF version :

Model : Q8, Q6, Q5, Q4, Q3
in ComfyUI\models\unet

CLIP : Q8, Q6, Q5, Q4, Q3
in ComfyUI\models\clip

Common Files :

Text encoder : t5xxl_fp8_e4m3fn.safetensors or ViT-L-14-TEXT-detail-improved-hiT-GmP-TE-only-HF.safetensors

VAE : ae.safetensors
in ComfyUI\models\vae