The Sigma EF-630 is a high-powered external flash unit for Sigma SA mount cameras with a guide number of 63 at ISO 100/200mm and wide-angle diffuser. It supports TTL auto exposure, HSS high-speed sync, and multi-flash modes for Sigma DSLR systems. The EF-630 is Sigma's flagship external flash.
Product released: February 1, 2016
Latest firmware version
Version 1.05, released August 5, 2021
Last checked for updates: Oct 31, 2026 17:59 UTC
What's new in version 1.05
It has changed the term of flash function to “Transmitter (TX) / Receiver (RX) Receive & Flash (R & FL)”.
LatestUpdate has tracked 5 versions of Sigma Electronic Flash EF-630 (Sigma SA) firmware, released between September 16, 2016 and August 5, 2021.
Version 1.05 - August 5, 2021: It has changed the term of flash function to “Transmitter (TX) / Receiver (RX) Receive & Flash (R & FL)”.
Version 1.04 - June 12, 2018: It has corrected the phenomenon where it occasionally stops communicating after recovering from Auto Power Off.* SIGMA FLASH USB DOCK FD-11 for SIGMA with firm…
Version 1.03 - December 22, 2017: It has corrected the phenomenon where it occasionally stops communicating after recovering from Auto Power Off.* SIGMA FLASH USB DOCK FD-11 for SIGMA with firm…
Version 1.02 - March 30, 2017: It has corrected the phenomenon where it occasionally stops communicating after recovering from Auto Power Off.* SIGMA FLASH USB DOCK FD-11 for SIGMA with firm…
Version 1.01 - September 16, 2016: It has corrected the phenomenon where it occasionally stops communicating after recovering from Auto Power Off.* SIGMA FLASH USB DOCK FD-11 for SIGMA with firm…
The Sigma EF-630 is a high-powered external flash unit for Sigma SA mount cameras with a guide number of 63 at ISO 100/200mm and wide-angle diffuser. It supports TTL auto exposure, HSS high-speed sync, and multi-flash modes for Sigma DSLR systems. The EF-630 is Sigma's flagship external flash. It was originally released on February 1, 2016.
What is the latest firmware version of Sigma Electronic Flash EF-630 (Sigma SA)?
The latest firmware version of Sigma Electronic Flash EF-630 (Sigma SA) is 1.05. It was released on August 5, 2021.
What changed in Sigma Electronic Flash EF-630 (Sigma SA) firmware version 1.05?
Sigma Electronic Flash EF-630 (Sigma SA) firmware version 1.05 includes the following changes: It has changed the term of flash function to “Transmitter (TX) / Receiver (RX) Receive & Flash (R & FL)”.
Where can I download the latest Sigma Electronic Flash EF-630 (Sigma SA) firmware?
Details and download instructions for the latest Sigma Electronic Flash EF-630 (Sigma SA) firmware (version 1.05) are on Sigma's official release page: https://www.sigma-global.com/en/support/firmware/ef-630/?mount=sigma-sa
How often does Sigma release firmware updates for Sigma Electronic Flash EF-630 (Sigma SA)?
We have tracked 5 firmware versions of Sigma Electronic Flash EF-630 (Sigma SA).