Firmware Hero
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Ricoh GR IV 4K UHD Video Recording Firmware Mod (ricoh-gr4-4k-mod)

This project provides an in-camera direct 4K UHD (3840×2160) Video Recording firmware modification for the Ricoh GR IV (Standard Edition / Mainland China version v1.11 fwdc248b.bin).

  • Custom firmware
  • Stable
  • Medium brick risk

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?
EasyCopy a file or use a web page. No extra software.
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.
Can I undo it?
The project doesn't say. Assume you can't.
Get itOpens github.com

Did it work for you?

Did Ricoh GR IV 4K UHD Video Recording Firmware Mod (ricoh-gr4-4k-mod) work on your Ricoh GR IV?

No reports yet.

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

Compatibility

Devices: Ricoh GR IV.

No compatibility information yet.

Getting started

From the project's README ("📷 In-Camera Flashing & Shooting Guide"):

  1. Firmware Flashing Procedure

  2. Prepare an SD card formatted in FAT32 or exFAT (V30 / U3 speed class or higher recommended);

  3. Copy the generated output/fwdc248b.bin directly to the root directory of the SD card;

  4. Turn the camera off;

  5. Hold down the [Playback] button and press the [Power] button simultaneously;

  6. The camera screen will display the new firmware version prompt. Press [OK] to confirm the upgrade;

  7. Wait for the progress bar to complete (~1-2 minutes). The camera will automatically reboot upon completion.

  8. 4K Shooting Workflow

  9. Rotate the top mode dial to Movie Mode;

  10. Screen displays smooth live view preview, with electronic level and indicators working normally;

  11. Press [MENU], navigate to [Movie Setting] / [Framerate]:

    • Select 24p $\rightarrow$ Records 4K 24P Cinematic UHD (3840×2160 @ 23.976 fps);
    • Select 30p $\rightarrow$ Records 4K 30P Smooth UHD (3840×2160 @ 29.970 fps);
    • Select 60p $\rightarrow$ Records 1080p 60P High-Speed Full HD (1920×1080 @ 59.940 fps);

  12. Press the shutter button to record a video;

  13. Remove the SD card and insert it into a computer. Inspect the .MOV file with MediaInfo, VLC, or NLE software (Final Cut Pro / Premiere / DaVinci Resolve):

    • Resolution: 3840 × 2160
    • Framerate: 23.976 fps (when 24p selected) or 29.970 fps (when 30p selected)
    • Bitrate: ~75-100 Mbps.

Read the full instructions

Risk and recovery

Brick risk
Medium
Requires opening the device
No