ELECTRONIC FLASH EF-630 (Canon EF mount) firmware v1.02
Sigma · Released Dec 22, 2017 · First seen by GearPulse Jul 5, 2026
What's in this update
It corrects the phenomenon that the distance display cannot be switched between meters and feet in custom mode.It corrects the phenomenon that it occasionally flashes unintentionally when the Sync. Terminal is used. * Please ensure to update SIGMA Optimization Pro to Ver1.4.1 for Windows, and Ver1.4.0 for Macintosh before updating the firmware.* It takes about 3 minutes to update the firmware.
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