Zhenzhen_Mju

If you've used Comfly_Mj and wondered why every image comes back looking like a postage stamp, this is the node you were missing. Midjourney doesn't hand you a finished high-res image on the first imagine - it gives you a 4-up grid of drafts, and you pick which one to upscale. Comfly_Mju is that "U" button, in node form.

It's pure plumbing and it's completely necessary: the MJ workflow in this pack is a two-node dance, and Mju is the second step. Skip it and you'll forever be stuck with draft-resolution grids, convinced the pack is broken. It's not - you just never told Midjourney which cell you actually wanted.

How it works

You feed it the taskId that came out of Comfly_Mj, set exactly one of the four U1–U4 toggles to true (those correspond to the four cells of the grid, top-left through bottom-right), and the node submits the upscale action to the proxy's Midjourney backend. It waits for the upscaled render and returns the finished image - along with a new taskId, because an upscaled result is itself a fresh task you could chain further.

The inputs that matter

• taskId - the string from Comfly_Mj. This is the connection that makes the whole flow work; wire it, don't paste it.
• U1 / U2 / U3 / U4 - four booleans, default all false. Turn on exactly one. Turning on two is a race with no winner; turning on none does nothing.

Outputs: image (IMAGE) and taskId (STRING - the new task, if you want to chain more actions).

There's also the standard api_key input, empty means it uses the key from Comflyapi.json.

Install

Same pack, same drill:

cd ComfyUI/custom_nodes
git clone https://github.com/ainewsto/Comfyui_Comfly

Restart, or install via ComfyUI Manager (search Comfyui_Comfly). No downloads beyond the standard requirements.txt set. Key from ai.comfly.chat in Comflyapi.json or the node's api_key.

Where people get burned

Every failure mode here is a wiring mistake. The classic: you set U1 true but forgot to connect taskId, so the node has no idea which grid to upscale - connect the wire, not your hopes. Second classic: you leave Comfly_Mj's taskId unconnected and instead paste a stale task id, and MJ has no idea what grid you mean anymore (tasks expire server-side). And the boring one: each upscale is a billed call, so preview the grid, pick your winner once, and don't upscale all four "just in case" - you'll pay for three images you'll never use.