Sigma ELECTRONIC FLASH EF-630 (Nikon F mount)
firmware v1.03
Sigma · Released Aug 5, 2021 · First seen Jul 5, 2026
v1.03 is the latest firmware for the Sigma ELECTRONIC FLASH EF-630 (Nikon F mount), released August 5, 2021.
What's in this update
It has changed the term of flash function to “Transmitter (TX) / Receiver (RX) Receive & Flash (R & FL)”.It adds compatibility with the Nikon Z 7II, D6, and D780.
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