Fujifilm GFX100RF Firmware 1.12 Fixes Critical EVF Eye Sensor Bug

A dead EVF eye sensor during a client shoot is not a minor inconvenience. Fujifilm closed that risk on April 1 by releasing Firmware Version 1.12 for the GFX100RF, targeting a rare but confirmed condition in which the electronic viewfinder's eye sensor failed to activate during EVF preview mode.

The fix is surgical. Version 1.12 makes no changes to image processing, feature sets, or autofocus behavior; it exists entirely to resolve the single eye-sensor activation fault. The GFX100RF, Fujifilm's flagship medium-format mirrorless, is built for commercial production, studio portraiture, fashion campaigns, and cinematic stills work, contexts where an intermittent viewfinder failure cannot be improvised around in the middle of a shoot.

Installation follows Fujifilm's standard firmware procedure: download the update file from the official support site, copy it to a formatted memory card, insert the card, and trigger the process from the Setup menu. A fully charged battery or active AC adapter connection is required throughout; a power interruption mid-install risks corrupting the firmware entirely. Photographers running third-party accessories should consult Fujifilm support before proceeding, and a lens compatibility check is advisable beforehand as well.

What the update signals matters as much as what it fixes. Medium-format workflows frequently involve tethered capture sessions, client-facing production days, and repeatable setups where any intermittent fault compounds in cost and credibility. A firmware release that adds nothing but eliminates a failure variable is, in that environment, as meaningful as a feature drop. The GFX100RF launched as a flagship; Fujifilm's continued active support through targeted single-issue patches keeps it operating like one.

The update is available now on Fujifilm's official support site. The patch is small; the cost of skipping it is not.