Fujifilm GFX100
firmware v4.20
Fujifilm · First seen Jul 4, 2026
v4.20 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.4.11 to Ver.4.20
- The following specification has been revised to improve compatibility with SDXC memory card format.
The maximum number of frames that can be recorded in a single folder has been changed from 9,999 to 999.
If you are using a macOS computer to process recorded files in the SDXC memory card, make sure to follow the procedure below before upgrading the firmware.
Follow the instructions in “II-2.
If using an SDXC memory card with existing files or one that has not been recently formatted:” in the article titled “Important notice for consumers processing FUJIFILM digital camera files using macOS” that was published on Feb. 2 in this web site and then format the SDXC memory card before using it.
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