Firmware Hero
0

GR3-LUTSmith

Your own colour look, from a .cube LUT, inside your RICOH GR III or GR IIIx.

  • Custom firmware
  • Beta
  • Medium brick risk
  • Reversible

Source code

This project hasn't been claimed by its maintainer yet, so its details come from the community. Is it yours? Claim it

Before you start

How hard is it?
HardUses the command line or developer tools.
What you need
  • Comfort with the command line
  • A computer
  • An SD card or USB stick
Can it break my device?
Small chance of trouble, with a way to recover. It may void your warranty.
Can I undo it?
Yes. You can go back to the official software.
Get itOpens github.com

Did it work for you?

Did GR3-LUTSmith work on your Ricoh GR III?

No reports yet.

One-tap reports from owners. Bricked reports are checked before they count.

Compatibility

Devices: Ricoh GR III.

No compatibility information yet.

Getting started

From the project's README ("Put it on the camera"):

  1. Copy it to the SD card

  2. Format the SD card in the camera.

  3. Copy the firmware file the tool wrote (fwdc239b.bin or fwdc243b.bin) to the top level of the card: not into a folder, and keep the name exactly as it is.

  4. Update the camera

  5. Insert the fully charged battery and the SD card.

  6. Start the firmware update from the camera's setup menu, as described in RICOH's official firmware update instructions for your camera.

  7. The camera offers an update to the version it already has (2.10 → 2.10, or 1.60 → 1.60). This is expected: the modified firmware keeps the version number. Confirm the update.

> [!CAUTION] > Do not turn the camera off, open the battery or card door, or remove the > card until the update has finished and the camera has restarted.

  1. Shoot

  • Open Image Control and choose your look: Cross Processing (or the slot you chose, or the name you gave it).
  • The firmware version still shows 2.10 (or 1.60). That is normal.
  • Delete the firmware file from the card (or format the card) so the update is not started again by accident.

To change to another LUT later, make a new firmware from the official file and install it the same way.

Going back to the official firmware

Repeat steps 1–2 with the official file from RICOH instead. Confirm the update, and your camera is back to stock.

Read the full instructions

Risk and recovery

Brick risk
Medium
Reversible
Yes
Voids the warranty
Yes
Requires opening the device
No

From the project's README ("Going back to the official firmware"):

Repeat steps 1–2 with the official file from RICOH instead. Confirm the update, and your camera is back to stock.

Read the full instructions