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 firmware Ver.1.01 will be required to update the firmware.
* Before updating the firmware of the SIGMA ELECTRONIC FLASH EF-630, please update SIGMA Optimization Pro to Ver. 1.4.1 or later for Windows, and Ver. 1.4.0 or later for Macintosh.
* It takes about 3 minutes to update the firmware.

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.

It has supported the sd Quattro camera’s firmware which improves the color reproduction when the Flash mode is selected in the White balance setting.

* It is necessary to update SIGMA sd Quattro camera’s firmware to the latest version.
* The firmware can be updated using SIGMA FLASH USB DOCK FD-11 for SIGMA.
* 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 LCD Panel Light is now kept on continuously while selecting DISPLAY SETTING.
It has changed the setting of Caution display to be two-stage to prevent overheating of the flashgun’s circuitry after continuous firing.
It has corrected the phenomenon where the correct serial number was not displayed.

* Please check if correct serial number is displayed by reconnecting the ELECTRONIC FLASH EF-630 after completing the firmware update.
* If you are using SIGMA Optimization Pro Ver1.3 or earlier, please ensure to update it to Ver1.3.1 before updating the firmware.
* It takes about 3 minutes to update.

It has become compatible with the EOS R and EOS RP mirrorless cameras.

Note: To update the firmware, the SIGMA FLASH USB DOCK FD-11 for CANON mount which is updated to Ver.1.01 is required.

It has corrected the phenomenon where it does not flash properly after recovering from Auto Power Off.

* SIGMA FLASH USB DOCK FD-11 for SIGMA with firmware Ver.1.01 will be required to update the firmware.
* Before updating the firmware of the SIGMA ELECTRONIC FLASH EF-630, please update SIGMA Optimization Pro to Ver. 1.4.1 or later for Windows, and Ver. 1.4.0 or later for Macintosh.
* It takes about 3 minutes to update the firmware.

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.

It has corrected the phenomenon that the flash does not fire when using the X Sync. contact in Manual Flash mode.

* The firmware can be updated using SIGMA FLASH USB DOCK FD-11 for CANON with firmware Ver1.01.
* 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.

It has become compatible with the Z7 and Z6 mirrorless cameras.
It has corrected the phenomenon whereby it shows overexposure on the slave side when it is used for wireless shooting.

Note: To update the firmware, the SIGMA FLASH USB DOCK FD-11 for NIKON mount which is updated to Ver.1.01 is required.

It improves the color tone of “TTL”, “TTL-BL” and “MANUAL” modes.

* 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.