K1C 2025 + CFS – Same Issue as Others (Locked Firmware + Hardware Mismatch)

Flagship K Series Creality K1 SE
1

Hi all,

I believe I’m experiencing the same issue others have reported with the K1C 2025 model and CFS upgrade.

Details:

  • Model: K1C 2025

  • Firmware: v1.0.0.26.20251024S (service firmware)

  • CFS not detected

  • 4 red LEDs on CFS

  • No CFS menu appears

  • No OTA or USB update option available

Issues I’ve found:

  1. The toolhead/nozzle PCB does not match the install guides. Port layout appears different from earlier K1C boards.

  2. The printer is running service firmware (“S” build) and cannot enter the public firmware channel.

  3. USB and OTA updates both report “up to date.”

  4. SSH access is locked.

  5. I’ve verified wiring, reseated connectors, tested cables, and followed official install instructions.

From what I can tell, this appears to be the same situation others have described where the 2025 hardware revision + service firmware prevents CFS functionality entirely.

Has anyone with a K1C 2025 successfully enabled CFS via firmware migration alone, or does this require a board replacement / retail firmware reflash?

Appreciate any insight.