Required Models:
GGUF Models : https://huggingface.co/city96/HiDream-I1-Dev-gguf
GGUF Loader : https://github.com/city96/ComfyUI-GGUF
TEXT Encoders: https://huggingface.co/Comfy-Org/HiDream-I1_ComfyUI/tree/main/split_files/text_encoders
VAE : https://huggingface.co/HiDream-ai/HiDream-I1-Dev/blob/main/vae/diffusion_pytorch_model.safetensors (Flux vae also working)
Reference:
https://www.reddit.com/r/StableDiffusion/s/JAX2zlEJtG