Fujifilm GFX100 firmware `v4.21`

Fujifilm · First seen Jul 4, 2026

v4.21 is not the latest firmware for the Fujifilm GFX100: the current version is v5.12 (February 27, 2025). Go to v5.12

What's in this update

Revised specification from Ver.4.20 to Ver.4.21

The firmware bugs have been fixed, which caused a EVF display failure when the “FRAME RATE PRIORITY” was selected in the [BOOST] menu by operating through the following menu flow.

[POWER MANAGEMENT] ➔ [PERFORMANCE] ➔ [BOOST]

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