u/turianbrandy123

▲ 1 r/olkb

Fantech MK921 MAXFIT8 One Piece Edition - RGB broken after loading official JSON, need firmware file

Hi everyone. Long day and completely stuck on this.

I have a Fantech MK921 MAXFIT8 One Piece Edition. I followed the official manual instructions exactly — downloaded the Maxfit8_OP.JSON from Fantech's website and loaded it into VIA. After doing this, all RGB stopped working except the encoder knob LED and Capslock LED.

Current state:

  • Keyboard fully functional — all keys work
  • Only encoder and Capslock LEDs light up
  • RGB Matrix appears stuck on "none"
  • Keyboard has been in bootloader mode (Drive E:)
  • Fantech Discord support unresponsive for hours
  • Their JSON file appears malformed — missing required 'lighting' property

I need either:

  1. The correct firmware .bin file for MK921 One Piece Edition to drag onto Drive E:
  2. OR a corrected Maxfit8_OP.JSON that actually works

I've tried every reset combo (ESC+plug, Space+B, ESC+Shift, ESC+Backspace), VIA lighting controls, JSON editing. Nothing works without the firmware file.

Fantech's support is Discord-only and they haven't responded. Any help appreciated. 🙏

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u/turianbrandy123 — 7 days ago